80616820

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{55217}}^1$

素因数の和:55299

約数の個数: 24

約数和(自身を含む): 171617544

約数和(自身を除く): 91000724

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 55217, 110434, 220868, 276085, 552170, 1104340, 4030841, 8061682, 16123364, 20154205, 40308410, 80616820]

約数ペア:

[(1, 80616820), (2, 40308410), (4, 20154205), (5, 16123364), (10, 8061682), (20, 4030841), (73, 1104340), (146, 552170), (292, 276085), (365, 220868), (730, 110434), (1460, 55217)]