20745524080

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{98713}}^1$

素因数の和:98834

約数の個数: 80

約数和(自身を含む): 50235159744

約数和(自身を除く): 29489635664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 142, 148, 185, 284, 296, 355, 370, 568, 592, 710, 740, 1136, 1420, 1480, 2627, 2840, 2960, 5254, 5680, 10508, 13135, 21016, 26270, 42032, 52540, 98713, 105080, 197426, 210160, 394852, 493565, 789704, 987130, 1579408, 1974260, 3652381, 3948520, 7008623, 7304762, 7897040, 14017246, 14609524, 18261905, 28034492, 29219048, 35043115, 36523810, 56068984, 58438096, 70086230, 73047620, 112137968, 140172460, 146095240, 259319051, 280344920, 292190480, 518638102, 560689840, 1037276204, 1296595255, 2074552408, 2593190510, 4149104816, 5186381020, 10372762040, 20745524080]

約数ペア:

[(1, 20745524080), (2, 10372762040), (4, 5186381020), (5, 4149104816), (8, 2593190510), (10, 2074552408), (16, 1296595255), (20, 1037276204), (37, 560689840), (40, 518638102), (71, 292190480), (74, 280344920), (80, 259319051), (142, 146095240), (148, 140172460), (185, 112137968), (284, 73047620), (296, 70086230), (355, 58438096), (370, 56068984), (568, 36523810), (592, 35043115), (710, 29219048), (740, 28034492), (1136, 18261905), (1420, 14609524), (1480, 14017246), (2627, 7897040), (2840, 7304762), (2960, 7008623), (5254, 3948520), (5680, 3652381), (10508, 1974260), (13135, 1579408), (21016, 987130), (26270, 789704), (42032, 493565), (52540, 394852), (98713, 210160), (105080, 197426)]