20499390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5297}}^1$

素因数の和:5353

約数の個数: 48

約数和(自身を含む): 54548208

約数和(自身を除く): 34048818

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5297, 10594, 15891, 26485, 31782, 47673, 52970, 79455, 95346, 158910, 227771, 238365, 455542, 476730, 683313, 1138855, 1366626, 2049939, 2277710, 3416565, 4099878, 6833130, 10249695, 20499390]

約数ペア:

[(1, 20499390), (2, 10249695), (3, 6833130), (5, 4099878), (6, 3416565), (9, 2277710), (10, 2049939), (15, 1366626), (18, 1138855), (30, 683313), (43, 476730), (45, 455542), (86, 238365), (90, 227771), (129, 158910), (215, 95346), (258, 79455), (387, 52970), (430, 47673), (645, 31782), (774, 26485), (1290, 15891), (1935, 10594), (3870, 5297)]