21353540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82129}}^1$

素因数の和:82151

約数の個数: 24

約数和(自身を含む): 48292440

約数和(自身を除く): 26938900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82129, 164258, 328516, 410645, 821290, 1067677, 1642580, 2135354, 4270708, 5338385, 10676770, 21353540]

約数ペア:

[(1, 21353540), (2, 10676770), (4, 5338385), (5, 4270708), (10, 2135354), (13, 1642580), (20, 1067677), (26, 821290), (52, 410645), (65, 328516), (130, 164258), (260, 82129)]