21707515

素因数分解:

$5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 28269360

約数和(自身を除く): 6561845

約数列:

[1, 5, 23, 29, 115, 145, 283, 529, 667, 1415, 2645, 3335, 6509, 8207, 15341, 32545, 41035, 76705, 149707, 188761, 748535, 943805, 4341503, 21707515]

約数ペア:

[(1, 21707515), (5, 4341503), (23, 943805), (29, 748535), (115, 188761), (145, 149707), (283, 76705), (529, 41035), (667, 32545), (1415, 15341), (2645, 8207), (3335, 6509)]