20401100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6581}}^1$

素因数の和:6626

約数の個数: 36

約数和(自身を含む): 45705408

約数和(自身を除く): 25304308

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6581, 13162, 26324, 32905, 65810, 131620, 164525, 204011, 329050, 408022, 658100, 816044, 1020055, 2040110, 4080220, 5100275, 10200550, 20401100]

約数ペア:

[(1, 20401100), (2, 10200550), (4, 5100275), (5, 4080220), (10, 2040110), (20, 1020055), (25, 816044), (31, 658100), (50, 408022), (62, 329050), (100, 204011), (124, 164525), (155, 131620), (310, 65810), (620, 32905), (775, 26324), (1550, 13162), (3100, 6581)]