21209914

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{56711}}^1$

素因数の和:56741

約数の個数: 16

約数和(自身を含む): 36749376

約数和(自身を除く): 15539462

約数列:

[1, 2, 11, 17, 22, 34, 187, 374, 56711, 113422, 623821, 964087, 1247642, 1928174, 10604957, 21209914]

約数ペア:

[(1, 21209914), (2, 10604957), (11, 1928174), (17, 1247642), (22, 964087), (34, 623821), (187, 113422), (374, 56711)]