18645160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11369}}^1$

素因数の和:11421

約数の個数: 32

約数和(自身を含む): 42978600

約数和(自身を除く): 24333440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11369, 22738, 45476, 56845, 90952, 113690, 227380, 454760, 466129, 932258, 1864516, 2330645, 3729032, 4661290, 9322580, 18645160]

約数ペア:

[(1, 18645160), (2, 9322580), (4, 4661290), (5, 3729032), (8, 2330645), (10, 1864516), (20, 932258), (40, 466129), (41, 454760), (82, 227380), (164, 113690), (205, 90952), (328, 56845), (410, 45476), (820, 22738), (1640, 11369)]