20004001012

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{640579}}^1$

素因数の和:640831

約数の個数: 24

約数和(自身を含む): 36123587360

約数和(自身を除く): 16119586348

約数列:

[1, 2, 4, 37, 74, 148, 211, 422, 844, 7807, 15614, 31228, 640579, 1281158, 2562316, 23701423, 47402846, 94805692, 135162169, 270324338, 540648676, 5001000253, 10002000506, 20004001012]

約数ペア:

[(1, 20004001012), (2, 10002000506), (4, 5001000253), (37, 540648676), (74, 270324338), (148, 135162169), (211, 94805692), (422, 47402846), (844, 23701423), (7807, 2562316), (15614, 1281158), (31228, 640579)]