39897879

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 62899200

約数和(自身を除く): 23001321

約数列:

[1, 3, 7, 21, 41, 123, 149, 287, 311, 447, 861, 933, 1043, 2177, 3129, 6109, 6531, 12751, 18327, 38253, 42763, 46339, 89257, 128289, 139017, 267771, 324373, 973119, 1899899, 5699697, 13299293, 39897879]

約数ペア:

[(1, 39897879), (3, 13299293), (7, 5699697), (21, 1899899), (41, 973119), (123, 324373), (149, 267771), (287, 139017), (311, 128289), (447, 89257), (861, 46339), (933, 42763), (1043, 38253), (2177, 18327), (3129, 12751), (6109, 6531)]