16991960

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2851}}^1$

素因数の和:3011

約数の個数: 32

約数和(自身を含む): 38502000

約数和(自身を除く): 21510040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2851, 2980, 5702, 5960, 11404, 14255, 22808, 28510, 57020, 114040, 424799, 849598, 1699196, 2123995, 3398392, 4247990, 8495980, 16991960]

約数ペア:

[(1, 16991960), (2, 8495980), (4, 4247990), (5, 3398392), (8, 2123995), (10, 1699196), (20, 849598), (40, 424799), (149, 114040), (298, 57020), (596, 28510), (745, 22808), (1192, 14255), (1490, 11404), (2851, 5960), (2980, 5702)]