8780860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{239}}^1$

素因数の和:426

約数の個数: 48

約数和(自身を含む): 20321280

約数和(自身を除く): 11540420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 167, 220, 239, 334, 478, 668, 835, 956, 1195, 1670, 1837, 2390, 2629, 3340, 3674, 4780, 5258, 7348, 9185, 10516, 13145, 18370, 26290, 36740, 39913, 52580, 79826, 159652, 199565, 399130, 439043, 798260, 878086, 1756172, 2195215, 4390430, 8780860]

約数ペア:

[(1, 8780860), (2, 4390430), (4, 2195215), (5, 1756172), (10, 878086), (11, 798260), (20, 439043), (22, 399130), (44, 199565), (55, 159652), (110, 79826), (167, 52580), (220, 39913), (239, 36740), (334, 26290), (478, 18370), (668, 13145), (835, 10516), (956, 9185), (1195, 7348), (1670, 5258), (1837, 4780), (2390, 3674), (2629, 3340)]