31312420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22051}}^1$

素因数の和:22131

約数の個数: 24

約数和(自身を含む): 66685248

約数和(自身を除く): 35372828

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 22051, 44102, 88204, 110255, 220510, 441020, 1565621, 3131242, 6262484, 7828105, 15656210, 31312420]

約数ペア:

[(1, 31312420), (2, 15656210), (4, 7828105), (5, 6262484), (10, 3131242), (20, 1565621), (71, 441020), (142, 220510), (284, 110255), (355, 88204), (710, 44102), (1420, 22051)]