64680720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20731}}^1$

素因数の和:20760

約数の個数: 80

約数和(自身を含む): 215944512

約数和(自身を除く): 151263792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 20731, 41462, 62193, 82924, 103655, 124386, 165848, 207310, 248772, 269503, 310965, 331696, 414620, 497544, 539006, 621930, 808509, 829240, 995088, 1078012, 1243860, 1347515, 1617018, 1658480, 2156024, 2487720, 2695030, 3234036, 4042545, 4312048, 4975440, 5390060, 6468072, 8085090, 10780120, 12936144, 16170180, 21560240, 32340360, 64680720]

約数ペア:

[(1, 64680720), (2, 32340360), (3, 21560240), (4, 16170180), (5, 12936144), (6, 10780120), (8, 8085090), (10, 6468072), (12, 5390060), (13, 4975440), (15, 4312048), (16, 4042545), (20, 3234036), (24, 2695030), (26, 2487720), (30, 2156024), (39, 1658480), (40, 1617018), (48, 1347515), (52, 1243860), (60, 1078012), (65, 995088), (78, 829240), (80, 808509), (104, 621930), (120, 539006), (130, 497544), (156, 414620), (195, 331696), (208, 310965), (240, 269503), (260, 248772), (312, 207310), (390, 165848), (520, 124386), (624, 103655), (780, 82924), (1040, 62193), (1560, 41462), (3120, 20731)]