21156640

素因数分解:

$2^5\times 5^1\times {\mathrm{132229}}^1$

素因数の和:132244

約数の個数: 24

約数和(自身を含む): 49982940

約数和(自身を除く): 28826300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132229, 264458, 528916, 661145, 1057832, 1322290, 2115664, 2644580, 4231328, 5289160, 10578320, 21156640]

約数ペア:

[(1, 21156640), (2, 10578320), (4, 5289160), (5, 4231328), (8, 2644580), (10, 2115664), (16, 1322290), (20, 1057832), (32, 661145), (40, 528916), (80, 264458), (160, 132229)]