21653445

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6907}}^1$

素因数の和:6945

約数の個数: 32

約数和(自身を含む): 39790080

約数和(自身を除く): 18136635

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6907, 20721, 34535, 75977, 103605, 131233, 227931, 379885, 393699, 656165, 1139655, 1443563, 1968495, 4330689, 7217815, 21653445]

約数ペア:

[(1, 21653445), (3, 7217815), (5, 4330689), (11, 1968495), (15, 1443563), (19, 1139655), (33, 656165), (55, 393699), (57, 379885), (95, 227931), (165, 131233), (209, 103605), (285, 75977), (627, 34535), (1045, 20721), (3135, 6907)]