128358820

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{87917}}^1$

素因数の和:87999

約数の個数: 24

約数和(自身を含む): 273249144

約数和(自身を除く): 144890324

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 87917, 175834, 351668, 439585, 879170, 1758340, 6417941, 12835882, 25671764, 32089705, 64179410, 128358820]

約数ペア:

[(1, 128358820), (2, 64179410), (4, 32089705), (5, 25671764), (10, 12835882), (20, 6417941), (73, 1758340), (146, 879170), (292, 439585), (365, 351668), (730, 175834), (1460, 87917)]