2051211620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1681321}}^1$

素因数の和:1681391

約数の個数: 24

約数和(自身を含む): 4378162488

約数和(自身を除く): 2326950868

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1681321, 3362642, 6725284, 8406605, 16813210, 33626420, 102560581, 205121162, 410242324, 512802905, 1025605810, 2051211620]

約数ペア:

[(1, 2051211620), (2, 1025605810), (4, 512802905), (5, 410242324), (10, 205121162), (20, 102560581), (61, 33626420), (122, 16813210), (244, 8406605), (305, 6725284), (610, 3362642), (1220, 1681321)]