64256420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1223}}^1$

素因数の和:1340

約数の個数: 48

約数和(自身を含む): 140652288

約数和(自身を除く): 76395868

約数列:

[1, 2, 4, 5, 10, 20, 37, 71, 74, 142, 148, 185, 284, 355, 370, 710, 740, 1223, 1420, 2446, 2627, 4892, 5254, 6115, 10508, 12230, 13135, 24460, 26270, 45251, 52540, 86833, 90502, 173666, 181004, 226255, 347332, 434165, 452510, 868330, 905020, 1736660, 3212821, 6425642, 12851284, 16064105, 32128210, 64256420]

約数ペア:

[(1, 64256420), (2, 32128210), (4, 16064105), (5, 12851284), (10, 6425642), (20, 3212821), (37, 1736660), (71, 905020), (74, 868330), (142, 452510), (148, 434165), (185, 347332), (284, 226255), (355, 181004), (370, 173666), (710, 90502), (740, 86833), (1223, 52540), (1420, 45251), (2446, 26270), (2627, 24460), (4892, 13135), (5254, 12230), (6115, 10508)]