20910760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40213}}^1$

素因数の和:40237

約数の個数: 32

約数和(自身を含む): 50669640

約数和(自身を除く): 29758880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40213, 80426, 160852, 201065, 321704, 402130, 522769, 804260, 1045538, 1608520, 2091076, 2613845, 4182152, 5227690, 10455380, 20910760]

約数ペア:

[(1, 20910760), (2, 10455380), (4, 5227690), (5, 4182152), (8, 2613845), (10, 2091076), (13, 1608520), (20, 1045538), (26, 804260), (40, 522769), (52, 402130), (65, 321704), (104, 201065), (130, 160852), (260, 80426), (520, 40213)]