21072248

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154943}}^1$

素因数の和:154966

約数の個数: 16

約数和(自身を含む): 41834880

約数和(自身を除く): 20762632

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154943, 309886, 619772, 1239544, 2634031, 5268062, 10536124, 21072248]

約数ペア:

[(1, 21072248), (2, 10536124), (4, 5268062), (8, 2634031), (17, 1239544), (34, 619772), (68, 309886), (136, 154943)]