21554730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1723}}^1$

素因数の和:1875

約数の個数: 48

約数和(自身を含む): 56478240

約数和(自身を除く): 34923510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 139, 278, 417, 695, 834, 1251, 1390, 1723, 2085, 2502, 3446, 4170, 5169, 6255, 8615, 10338, 12510, 15507, 17230, 25845, 31014, 51690, 77535, 155070, 239497, 478994, 718491, 1197485, 1436982, 2155473, 2394970, 3592455, 4310946, 7184910, 10777365, 21554730]

約数ペア:

[(1, 21554730), (2, 10777365), (3, 7184910), (5, 4310946), (6, 3592455), (9, 2394970), (10, 2155473), (15, 1436982), (18, 1197485), (30, 718491), (45, 478994), (90, 239497), (139, 155070), (278, 77535), (417, 51690), (695, 31014), (834, 25845), (1251, 17230), (1390, 15507), (1723, 12510), (2085, 10338), (2502, 8615), (3446, 6255), (4170, 5169)]