40805180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156943}}^1$

素因数の和:156965

約数の個数: 24

約数和(自身を含む): 92283072

約数和(自身を除く): 51477892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 156943, 313886, 627772, 784715, 1569430, 2040259, 3138860, 4080518, 8161036, 10201295, 20402590, 40805180]

約数ペア:

[(1, 40805180), (2, 20402590), (4, 10201295), (5, 8161036), (10, 4080518), (13, 3138860), (20, 2040259), (26, 1569430), (52, 784715), (65, 627772), (130, 313886), (260, 156943)]