19812550

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5581}}^1$

素因数の和:5664

約数の個数: 24

約数和(自身を含む): 37377072

約数和(自身を除く): 17564522

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 3550, 5581, 11162, 27905, 55810, 139525, 279050, 396251, 792502, 1981255, 3962510, 9906275, 19812550]

約数ペア:

[(1, 19812550), (2, 9906275), (5, 3962510), (10, 1981255), (25, 792502), (50, 396251), (71, 279050), (142, 139525), (355, 55810), (710, 27905), (1775, 11162), (3550, 5581)]