218657660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{840991}}^1$

素因数の和:841013

約数の個数: 24

約数和(自身を含む): 494503296

約数和(自身を除く): 275845636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 840991, 1681982, 3363964, 4204955, 8409910, 10932883, 16819820, 21865766, 43731532, 54664415, 109328830, 218657660]

約数ペア:

[(1, 218657660), (2, 109328830), (4, 54664415), (5, 43731532), (10, 21865766), (13, 16819820), (20, 10932883), (26, 8409910), (52, 4204955), (65, 3363964), (130, 1681982), (260, 840991)]