638421350405

素因数分解:

$5^1\times {\mathrm{907}}^1\times {\mathrm{1667}}^1\times {\mathrm{84449}}^1$

素因数の和:87028

約数の個数: 16

約数和(自身を含む): 767419444800

約数和(自身を除く): 128998094395

約数列:

[1, 5, 907, 1667, 4535, 8335, 84449, 422245, 1511969, 7559845, 76595243, 140776483, 382976215, 703882415, 127684270081, 638421350405]

約数ペア:

[(1, 638421350405), (5, 127684270081), (907, 703882415), (1667, 382976215), (4535, 140776483), (8335, 76595243), (84449, 7559845), (422245, 1511969)]