20197640

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6917}}^1$

素因数の和:7001

約数の個数: 32

約数和(自身を含む): 46073880

約数和(自身を除く): 25876240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6917, 13834, 27668, 34585, 55336, 69170, 138340, 276680, 504941, 1009882, 2019764, 2524705, 4039528, 5049410, 10098820, 20197640]

約数ペア:

[(1, 20197640), (2, 10098820), (4, 5049410), (5, 4039528), (8, 2524705), (10, 2019764), (20, 1009882), (40, 504941), (73, 276680), (146, 138340), (292, 69170), (365, 55336), (584, 34585), (730, 27668), (1460, 13834), (2920, 6917)]