4989640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1579}}^1$

素因数の和:1669

約数の個数: 32

約数和(自身を含む): 11376000

約数和(自身を除く): 6386360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1579, 1580, 3158, 3160, 6316, 7895, 12632, 15790, 31580, 63160, 124741, 249482, 498964, 623705, 997928, 1247410, 2494820, 4989640]

約数ペア:

[(1, 4989640), (2, 2494820), (4, 1247410), (5, 997928), (8, 623705), (10, 498964), (20, 249482), (40, 124741), (79, 63160), (158, 31580), (316, 15790), (395, 12632), (632, 7895), (790, 6316), (1579, 3160), (1580, 3158)]