20412340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78509}}^1$

素因数の和:78531

約数の個数: 24

約数和(自身を含む): 46163880

約数和(自身を除く): 25751540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78509, 157018, 314036, 392545, 785090, 1020617, 1570180, 2041234, 4082468, 5103085, 10206170, 20412340]

約数ペア:

[(1, 20412340), (2, 10206170), (4, 5103085), (5, 4082468), (10, 2041234), (13, 1570180), (20, 1020617), (26, 785090), (52, 392545), (65, 314036), (130, 157018), (260, 78509)]