15210820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 34151040

約数和(自身を除く): 18940220

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 769, 860, 989, 1538, 1978, 3076, 3845, 3956, 4945, 7690, 9890, 15380, 17687, 19780, 33067, 35374, 66134, 70748, 88435, 132268, 165335, 176870, 330670, 353740, 661340, 760541, 1521082, 3042164, 3802705, 7605410, 15210820]

約数ペア:

[(1, 15210820), (2, 7605410), (4, 3802705), (5, 3042164), (10, 1521082), (20, 760541), (23, 661340), (43, 353740), (46, 330670), (86, 176870), (92, 165335), (115, 132268), (172, 88435), (215, 70748), (230, 66134), (430, 35374), (460, 33067), (769, 19780), (860, 17687), (989, 15380), (1538, 9890), (1978, 7690), (3076, 4945), (3845, 3956)]