18509240

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3329}}^1$

素因数の和:3479

約数の個数: 32

約数和(自身を含む): 41958000

約数和(自身を除く): 23448760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3329, 5560, 6658, 13316, 16645, 26632, 33290, 66580, 133160, 462731, 925462, 1850924, 2313655, 3701848, 4627310, 9254620, 18509240]

約数ペア:

[(1, 18509240), (2, 9254620), (4, 4627310), (5, 3701848), (8, 2313655), (10, 1850924), (20, 925462), (40, 462731), (139, 133160), (278, 66580), (556, 33290), (695, 26632), (1112, 16645), (1390, 13316), (2780, 6658), (3329, 5560)]