1991821520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1915213}}^1$

素因数の和:1915239

約数の個数: 40

約数和(自身を含む): 4987217256

約数和(自身を除く): 2995395736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1915213, 3830426, 7660852, 9576065, 15321704, 19152130, 24897769, 30643408, 38304260, 49795538, 76608520, 99591076, 124488845, 153217040, 199182152, 248977690, 398364304, 497955380, 995910760, 1991821520]

約数ペア:

[(1, 1991821520), (2, 995910760), (4, 497955380), (5, 398364304), (8, 248977690), (10, 199182152), (13, 153217040), (16, 124488845), (20, 99591076), (26, 76608520), (40, 49795538), (52, 38304260), (65, 30643408), (80, 24897769), (104, 19152130), (130, 15321704), (208, 9576065), (260, 7660852), (520, 3830426), (1040, 1915213)]