21782410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12889}}^1$

素因数の和:12922

約数の個数: 24

約数和(自身を含む): 42459660

約数和(自身を除く): 20677250

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12889, 25778, 64445, 128890, 167557, 335114, 837785, 1675570, 2178241, 4356482, 10891205, 21782410]

約数ペア:

[(1, 21782410), (2, 10891205), (5, 4356482), (10, 2178241), (13, 1675570), (26, 837785), (65, 335114), (130, 167557), (169, 128890), (338, 64445), (845, 25778), (1690, 12889)]