21787100

素因数分解:

$2^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{977}}^1$

素因数の和:1214

約数の個数: 36

約数和(自身を含む): 47538624

約数和(自身を除く): 25751524

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 223, 446, 892, 977, 1115, 1954, 2230, 3908, 4460, 4885, 5575, 9770, 11150, 19540, 22300, 24425, 48850, 97700, 217871, 435742, 871484, 1089355, 2178710, 4357420, 5446775, 10893550, 21787100]

約数ペア:

[(1, 21787100), (2, 10893550), (4, 5446775), (5, 4357420), (10, 2178710), (20, 1089355), (25, 871484), (50, 435742), (100, 217871), (223, 97700), (446, 48850), (892, 24425), (977, 22300), (1115, 19540), (1954, 11150), (2230, 9770), (3908, 5575), (4460, 4885)]