21275790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13381}}^1$

素因数の和:13444

約数の個数: 32

約数和(自身を含む): 52029216

約数和(自身を除く): 30753426

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13381, 26762, 40143, 66905, 80286, 133810, 200715, 401430, 709193, 1418386, 2127579, 3545965, 4255158, 7091930, 10637895, 21275790]

約数ペア:

[(1, 21275790), (2, 10637895), (3, 7091930), (5, 4255158), (6, 3545965), (10, 2127579), (15, 1418386), (30, 709193), (53, 401430), (106, 200715), (159, 133810), (265, 80286), (318, 66905), (530, 40143), (795, 26762), (1590, 13381)]