21720138

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{1723}}^1$

素因数の和:1930

約数の個数: 32

約数和(自身を含む): 47665152

約数和(自身を除く): 25945014

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 191, 382, 573, 1146, 1723, 2101, 3446, 4202, 5169, 6303, 10338, 12606, 18953, 37906, 56859, 113718, 329093, 658186, 987279, 1974558, 3620023, 7240046, 10860069, 21720138]

約数ペア:

[(1, 21720138), (2, 10860069), (3, 7240046), (6, 3620023), (11, 1974558), (22, 987279), (33, 658186), (66, 329093), (191, 113718), (382, 56859), (573, 37906), (1146, 18953), (1723, 12606), (2101, 10338), (3446, 6303), (4202, 5169)]