21189506

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{15377}}^1$

素因数の和:15445

約数の個数: 16

約数和(自身を含む): 34877304

約数和(自身を除く): 13687798

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 15377, 30754, 199901, 399802, 814981, 1629962, 10594753, 21189506]

約数ペア:

[(1, 21189506), (2, 10594753), (13, 1629962), (26, 814981), (53, 399802), (106, 199901), (689, 30754), (1378, 15377)]