20786220

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:91

約数の個数: 288

約数和(自身を含む): 82188288

約数和(自身を除く): 61402068

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 47, 52, 54, 60, 63, 65, 70, 78, 81, 84, 90, 91, 94, 105, 108, 117, 126, 130, 135, 140, 141, 156, 162, 180, 182, 188, 189, 195, 210, 234, 235, 243, 252, 260, 270, 273, 282, 315, 324, 329, 351, 364, 378, 390, 405, 420, 423, 455, 468, 470, 486, 540, 546, 564, 567, 585, 611, 630, 658, 702, 705, 756, 780, 810, 819, 846, 910, 940, 945, 972, 987, 1053, 1092, 1134, 1170, 1215, 1222, 1260, 1269, 1316, 1365, 1404, 1410, 1620, 1638, 1645, 1692, 1701, 1755, 1820, 1833, 1890, 1974, 2106, 2115, 2268, 2340, 2430, 2444, 2457, 2538, 2730, 2820, 2835, 2961, 3055, 3159, 3276, 3290, 3402, 3510, 3666, 3780, 3807, 3948, 4095, 4212, 4230, 4277, 4860, 4914, 4935, 5076, 5265, 5460, 5499, 5670, 5922, 6110, 6318, 6345, 6580, 6804, 7020, 7332, 7371, 7614, 8190, 8460, 8505, 8554, 8883, 9165, 9828, 9870, 10530, 10998, 11340, 11421, 11844, 12220, 12285, 12636, 12690, 12831, 14742, 14805, 15228, 15795, 16380, 16497, 17010, 17108, 17766, 18330, 19035, 19740, 21060, 21385, 21996, 22113, 22842, 24570, 25380, 25662, 26649, 27495, 29484, 29610, 31590, 32994, 34020, 35532, 36660, 36855, 38070, 38493, 42770, 44226, 44415, 45684, 49140, 49491, 51324, 53298, 54990, 57105, 59220, 63180, 64155, 65988, 73710, 76140, 76986, 79947, 82485, 85540, 88452, 88830, 98982, 106596, 109980, 110565, 114210, 115479, 128310, 133245, 147420, 148473, 153972, 159894, 164970, 177660, 192465, 197964, 221130, 228420, 230958, 247455, 256620, 266490, 296946, 319788, 329940, 346437, 384930, 399735, 442260, 461916, 494910, 532980, 577395, 593892, 692874, 742365, 769860, 799470, 989820, 1039311, 1154790, 1385748, 1484730, 1598940, 1732185, 2078622, 2309580, 2969460, 3464370, 4157244, 5196555, 6928740, 10393110, 20786220]

約数ペア:

[(1, 20786220), (2, 10393110), (3, 6928740), (4, 5196555), (5, 4157244), (6, 3464370), (7, 2969460), (9, 2309580), (10, 2078622), (12, 1732185), (13, 1598940), (14, 1484730), (15, 1385748), (18, 1154790), (20, 1039311), (21, 989820), (26, 799470), (27, 769860), (28, 742365), (30, 692874), (35, 593892), (36, 577395), (39, 532980), (42, 494910), (45, 461916), (47, 442260), (52, 399735), (54, 384930), (60, 346437), (63, 329940), (65, 319788), (70, 296946), (78, 266490), (81, 256620), (84, 247455), (90, 230958), (91, 228420), (94, 221130), (105, 197964), (108, 192465), (117, 177660), (126, 164970), (130, 159894), (135, 153972), (140, 148473), (141, 147420), (156, 133245), (162, 128310), (180, 115479), (182, 114210), (188, 110565), (189, 109980), (195, 106596), (210, 98982), (234, 88830), (235, 88452), (243, 85540), (252, 82485), (260, 79947), (270, 76986), (273, 76140), (282, 73710), (315, 65988), (324, 64155), (329, 63180), (351, 59220), (364, 57105), (378, 54990), (390, 53298), (405, 51324), (420, 49491), (423, 49140), (455, 45684), (468, 44415), (470, 44226), (486, 42770), (540, 38493), (546, 38070), (564, 36855), (567, 36660), (585, 35532), (611, 34020), (630, 32994), (658, 31590), (702, 29610), (705, 29484), (756, 27495), (780, 26649), (810, 25662), (819, 25380), (846, 24570), (910, 22842), (940, 22113), (945, 21996), (972, 21385), (987, 21060), (1053, 19740), (1092, 19035), (1134, 18330), (1170, 17766), (1215, 17108), (1222, 17010), (1260, 16497), (1269, 16380), (1316, 15795), (1365, 15228), (1404, 14805), (1410, 14742), (1620, 12831), (1638, 12690), (1645, 12636), (1692, 12285), (1701, 12220), (1755, 11844), (1820, 11421), (1833, 11340), (1890, 10998), (1974, 10530), (2106, 9870), (2115, 9828), (2268, 9165), (2340, 8883), (2430, 8554), (2444, 8505), (2457, 8460), (2538, 8190), (2730, 7614), (2820, 7371), (2835, 7332), (2961, 7020), (3055, 6804), (3159, 6580), (3276, 6345), (3290, 6318), (3402, 6110), (3510, 5922), (3666, 5670), (3780, 5499), (3807, 5460), (3948, 5265), (4095, 5076), (4212, 4935), (4230, 4914), (4277, 4860)]