20456280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:111

約数の個数: 256

約数和(自身を含む): 77414400

約数和(自身を除く): 56958120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 31, 36, 39, 40, 45, 47, 52, 54, 60, 62, 65, 72, 78, 90, 93, 94, 104, 108, 117, 120, 124, 130, 135, 141, 155, 156, 180, 186, 188, 195, 216, 234, 235, 248, 260, 270, 279, 282, 310, 312, 351, 360, 372, 376, 390, 403, 423, 465, 468, 470, 520, 540, 558, 564, 585, 611, 620, 702, 705, 744, 780, 806, 837, 846, 930, 936, 940, 1080, 1116, 1128, 1170, 1209, 1222, 1240, 1269, 1395, 1404, 1410, 1457, 1560, 1612, 1674, 1692, 1755, 1833, 1860, 1880, 2015, 2115, 2232, 2340, 2418, 2444, 2538, 2790, 2808, 2820, 2914, 3055, 3224, 3348, 3384, 3510, 3627, 3666, 3720, 4030, 4185, 4230, 4371, 4680, 4836, 4888, 5076, 5499, 5580, 5640, 5828, 6045, 6110, 6345, 6696, 7020, 7254, 7285, 7332, 8060, 8370, 8460, 8742, 9165, 9672, 10152, 10881, 10998, 11160, 11656, 12090, 12220, 12690, 13113, 14040, 14508, 14570, 14664, 16120, 16497, 16740, 16920, 17484, 18135, 18330, 18941, 21762, 21855, 21996, 24180, 24440, 25380, 26226, 27495, 29016, 29140, 32994, 33480, 34968, 36270, 36660, 37882, 39339, 43524, 43710, 43992, 48360, 50760, 52452, 54405, 54990, 56823, 58280, 65565, 65988, 72540, 73320, 75764, 78678, 82485, 87048, 87420, 94705, 104904, 108810, 109980, 113646, 131130, 131976, 145080, 151528, 157356, 164970, 170469, 174840, 189410, 196695, 217620, 219960, 227292, 262260, 284115, 314712, 329940, 340938, 378820, 393390, 435240, 454584, 511407, 524520, 568230, 659880, 681876, 757640, 786780, 852345, 1022814, 1136460, 1363752, 1573560, 1704690, 2045628, 2272920, 2557035, 3409380, 4091256, 5114070, 6818760, 10228140, 20456280]

約数ペア:

[(1, 20456280), (2, 10228140), (3, 6818760), (4, 5114070), (5, 4091256), (6, 3409380), (8, 2557035), (9, 2272920), (10, 2045628), (12, 1704690), (13, 1573560), (15, 1363752), (18, 1136460), (20, 1022814), (24, 852345), (26, 786780), (27, 757640), (30, 681876), (31, 659880), (36, 568230), (39, 524520), (40, 511407), (45, 454584), (47, 435240), (52, 393390), (54, 378820), (60, 340938), (62, 329940), (65, 314712), (72, 284115), (78, 262260), (90, 227292), (93, 219960), (94, 217620), (104, 196695), (108, 189410), (117, 174840), (120, 170469), (124, 164970), (130, 157356), (135, 151528), (141, 145080), (155, 131976), (156, 131130), (180, 113646), (186, 109980), (188, 108810), (195, 104904), (216, 94705), (234, 87420), (235, 87048), (248, 82485), (260, 78678), (270, 75764), (279, 73320), (282, 72540), (310, 65988), (312, 65565), (351, 58280), (360, 56823), (372, 54990), (376, 54405), (390, 52452), (403, 50760), (423, 48360), (465, 43992), (468, 43710), (470, 43524), (520, 39339), (540, 37882), (558, 36660), (564, 36270), (585, 34968), (611, 33480), (620, 32994), (702, 29140), (705, 29016), (744, 27495), (780, 26226), (806, 25380), (837, 24440), (846, 24180), (930, 21996), (936, 21855), (940, 21762), (1080, 18941), (1116, 18330), (1128, 18135), (1170, 17484), (1209, 16920), (1222, 16740), (1240, 16497), (1269, 16120), (1395, 14664), (1404, 14570), (1410, 14508), (1457, 14040), (1560, 13113), (1612, 12690), (1674, 12220), (1692, 12090), (1755, 11656), (1833, 11160), (1860, 10998), (1880, 10881), (2015, 10152), (2115, 9672), (2232, 9165), (2340, 8742), (2418, 8460), (2444, 8370), (2538, 8060), (2790, 7332), (2808, 7285), (2820, 7254), (2914, 7020), (3055, 6696), (3224, 6345), (3348, 6110), (3384, 6045), (3510, 5828), (3627, 5640), (3666, 5580), (3720, 5499), (4030, 5076), (4185, 4888), (4230, 4836), (4371, 4680)]