21089220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1297}}^1$

素因数の和:1580

約数の個数: 48

約数和(自身を含む): 59313408

約数和(自身を除く): 38224188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 271, 542, 813, 1084, 1297, 1355, 1626, 2594, 2710, 3252, 3891, 4065, 5188, 5420, 6485, 7782, 8130, 12970, 15564, 16260, 19455, 25940, 38910, 77820, 351487, 702974, 1054461, 1405948, 1757435, 2108922, 3514870, 4217844, 5272305, 7029740, 10544610, 21089220]

約数ペア:

[(1, 21089220), (2, 10544610), (3, 7029740), (4, 5272305), (5, 4217844), (6, 3514870), (10, 2108922), (12, 1757435), (15, 1405948), (20, 1054461), (30, 702974), (60, 351487), (271, 77820), (542, 38910), (813, 25940), (1084, 19455), (1297, 16260), (1355, 15564), (1626, 12970), (2594, 8130), (2710, 7782), (3252, 6485), (3891, 5420), (4065, 5188)]