21459765

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 35329536

約数和(自身を除く): 13869771

約数列:

[1, 3, 5, 15, 67, 131, 163, 201, 335, 393, 489, 655, 815, 1005, 1965, 2445, 8777, 10921, 21353, 26331, 32763, 43885, 54605, 64059, 106765, 131655, 163815, 320295, 1430651, 4291953, 7153255, 21459765]

約数ペア:

[(1, 21459765), (3, 7153255), (5, 4291953), (15, 1430651), (67, 320295), (131, 163815), (163, 131655), (201, 106765), (335, 64059), (393, 54605), (489, 43885), (655, 32763), (815, 26331), (1005, 21353), (1965, 10921), (2445, 8777)]