21754020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1181}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 61161408

約数和(自身を除く): 39407388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 307, 614, 921, 1181, 1228, 1535, 1842, 2362, 3070, 3543, 3684, 4605, 4724, 5905, 6140, 7086, 9210, 11810, 14172, 17715, 18420, 23620, 35430, 70860, 362567, 725134, 1087701, 1450268, 1812835, 2175402, 3625670, 4350804, 5438505, 7251340, 10877010, 21754020]

約数ペア:

[(1, 21754020), (2, 10877010), (3, 7251340), (4, 5438505), (5, 4350804), (6, 3625670), (10, 2175402), (12, 1812835), (15, 1450268), (20, 1087701), (30, 725134), (60, 362567), (307, 70860), (614, 35430), (921, 23620), (1181, 18420), (1228, 17715), (1535, 14172), (1842, 11810), (2362, 9210), (3070, 7086), (3543, 6140), (3684, 5905), (4605, 4724)]