21227816

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 40776960

約数和(自身を除く): 19549144

約数列:

[1, 2, 4, 8, 73, 146, 163, 223, 292, 326, 446, 584, 652, 892, 1304, 1784, 11899, 16279, 23798, 32558, 36349, 47596, 65116, 72698, 95192, 130232, 145396, 290792, 2653477, 5306954, 10613908, 21227816]

約数ペア:

[(1, 21227816), (2, 10613908), (4, 5306954), (8, 2653477), (73, 290792), (146, 145396), (163, 130232), (223, 95192), (292, 72698), (326, 65116), (446, 47596), (584, 36349), (652, 32558), (892, 23798), (1304, 16279), (1784, 11899)]