111639280

素因数分解:

$2^4\times 5^1\times {\mathrm{1395491}}^1$

素因数の和:1395504

約数の個数: 20

約数和(自身を含む): 259561512

約数和(自身を除く): 147922232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1395491, 2790982, 5581964, 6977455, 11163928, 13954910, 22327856, 27909820, 55819640, 111639280]

約数ペア:

[(1, 111639280), (2, 55819640), (4, 27909820), (5, 22327856), (8, 13954910), (10, 11163928), (16, 6977455), (20, 5581964), (40, 2790982), (80, 1395491)]