9899380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 22176000

約数和(自身を除く): 12276620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 239, 380, 436, 478, 545, 956, 1090, 1195, 2071, 2180, 2390, 4142, 4541, 4780, 8284, 9082, 10355, 18164, 20710, 22705, 26051, 41420, 45410, 52102, 90820, 104204, 130255, 260510, 494969, 521020, 989938, 1979876, 2474845, 4949690, 9899380]

約数ペア:

[(1, 9899380), (2, 4949690), (4, 2474845), (5, 1979876), (10, 989938), (19, 521020), (20, 494969), (38, 260510), (76, 130255), (95, 104204), (109, 90820), (190, 52102), (218, 45410), (239, 41420), (380, 26051), (436, 22705), (478, 20710), (545, 18164), (956, 10355), (1090, 9082), (1195, 8284), (2071, 4780), (2180, 4541), (2390, 4142)]