21920020

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{10243}}^1$

素因数の和:10359

約数の個数: 24

約数和(自身を含む): 46466784

約数和(自身を除く): 24546764

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 10243, 20486, 40972, 51215, 102430, 204860, 1096001, 2192002, 4384004, 5480005, 10960010, 21920020]

約数ペア:

[(1, 21920020), (2, 10960010), (4, 5480005), (5, 4384004), (10, 2192002), (20, 1096001), (107, 204860), (214, 102430), (428, 51215), (535, 40972), (1070, 20486), (2140, 10243)]