21493617

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10025103

約数列:

[1, 3, 19, 47, 57, 71, 113, 141, 213, 339, 893, 1349, 2147, 2679, 3337, 4047, 5311, 6441, 8023, 10011, 15933, 24069, 63403, 100909, 152437, 190209, 302727, 377081, 457311, 1131243, 7164539, 21493617]

約数ペア:

[(1, 21493617), (3, 7164539), (19, 1131243), (47, 457311), (57, 377081), (71, 302727), (113, 190209), (141, 152437), (213, 100909), (339, 63403), (893, 24069), (1349, 15933), (2147, 10011), (2679, 8023), (3337, 6441), (4047, 5311)]