20401290

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:133

約数の個数: 192

約数和(自身を含む): 67931136

約数和(自身を除く): 47529846

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 47, 53, 63, 65, 70, 78, 90, 91, 94, 105, 106, 117, 126, 130, 141, 159, 182, 195, 210, 234, 235, 265, 273, 282, 315, 318, 329, 371, 390, 423, 455, 470, 477, 530, 546, 585, 611, 630, 658, 689, 705, 742, 795, 819, 846, 910, 954, 987, 1113, 1170, 1222, 1365, 1378, 1410, 1590, 1638, 1645, 1833, 1855, 1974, 2067, 2115, 2226, 2385, 2491, 2730, 2961, 3055, 3290, 3339, 3445, 3666, 3710, 4095, 4134, 4230, 4277, 4770, 4823, 4935, 4982, 5499, 5565, 5922, 6110, 6201, 6678, 6890, 7473, 8190, 8554, 9165, 9646, 9870, 10335, 10998, 11130, 12402, 12455, 12831, 14469, 14805, 14946, 16695, 17437, 18330, 20670, 21385, 22419, 24115, 24910, 25662, 27495, 28938, 29610, 31005, 32383, 33390, 34874, 37365, 38493, 42770, 43407, 44838, 48230, 52311, 54990, 62010, 64155, 64766, 72345, 74730, 76986, 86814, 87185, 97149, 104622, 112095, 128310, 144690, 156933, 161915, 174370, 192465, 194298, 217035, 224190, 226681, 261555, 291447, 313866, 323830, 384930, 434070, 453362, 485745, 523110, 582894, 680043, 784665, 971490, 1133405, 1360086, 1457235, 1569330, 2040129, 2266810, 2914470, 3400215, 4080258, 6800430, 10200645, 20401290]

約数ペア:

[(1, 20401290), (2, 10200645), (3, 6800430), (5, 4080258), (6, 3400215), (7, 2914470), (9, 2266810), (10, 2040129), (13, 1569330), (14, 1457235), (15, 1360086), (18, 1133405), (21, 971490), (26, 784665), (30, 680043), (35, 582894), (39, 523110), (42, 485745), (45, 453362), (47, 434070), (53, 384930), (63, 323830), (65, 313866), (70, 291447), (78, 261555), (90, 226681), (91, 224190), (94, 217035), (105, 194298), (106, 192465), (117, 174370), (126, 161915), (130, 156933), (141, 144690), (159, 128310), (182, 112095), (195, 104622), (210, 97149), (234, 87185), (235, 86814), (265, 76986), (273, 74730), (282, 72345), (315, 64766), (318, 64155), (329, 62010), (371, 54990), (390, 52311), (423, 48230), (455, 44838), (470, 43407), (477, 42770), (530, 38493), (546, 37365), (585, 34874), (611, 33390), (630, 32383), (658, 31005), (689, 29610), (705, 28938), (742, 27495), (795, 25662), (819, 24910), (846, 24115), (910, 22419), (954, 21385), (987, 20670), (1113, 18330), (1170, 17437), (1222, 16695), (1365, 14946), (1378, 14805), (1410, 14469), (1590, 12831), (1638, 12455), (1645, 12402), (1833, 11130), (1855, 10998), (1974, 10335), (2067, 9870), (2115, 9646), (2226, 9165), (2385, 8554), (2491, 8190), (2730, 7473), (2961, 6890), (3055, 6678), (3290, 6201), (3339, 6110), (3445, 5922), (3666, 5565), (3710, 5499), (4095, 4982), (4134, 4935), (4230, 4823), (4277, 4770)]