9995980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4423}}^1$

素因数の和:4545

約数の個数: 24

約数和(自身を含む): 21182112

約数和(自身を除く): 11186132

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 4423, 8846, 17692, 22115, 44230, 88460, 499799, 999598, 1999196, 2498995, 4997990, 9995980]

約数ペア:

[(1, 9995980), (2, 4997990), (4, 2498995), (5, 1999196), (10, 999598), (20, 499799), (113, 88460), (226, 44230), (452, 22115), (565, 17692), (1130, 8846), (2260, 4423)]