20805220805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{35221}}^1$

素因数の和:35397

約数の個数: 32

約数和(自身を含む): 26725890048

約数和(自身を除く): 5920669243

約数列:

[1, 5, 31, 37, 103, 155, 185, 515, 1147, 3193, 3811, 5735, 15965, 19055, 35221, 118141, 176105, 590705, 1091851, 1303177, 3627763, 5459255, 6515885, 18138815, 40398487, 112460653, 134227231, 201992435, 562303265, 671136155, 4161044161, 20805220805]

約数ペア:

[(1, 20805220805), (5, 4161044161), (31, 671136155), (37, 562303265), (103, 201992435), (155, 134227231), (185, 112460653), (515, 40398487), (1147, 18138815), (3193, 6515885), (3811, 5459255), (5735, 3627763), (15965, 1303177), (19055, 1091851), (35221, 590705), (118141, 176105)]