21396112

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 42916896

約数和(自身を除く): 21520784

約数列:

[1, 2, 4, 8, 16, 43, 86, 137, 172, 227, 274, 344, 454, 548, 688, 908, 1096, 1816, 2192, 3632, 5891, 9761, 11782, 19522, 23564, 31099, 39044, 47128, 62198, 78088, 94256, 124396, 156176, 248792, 497584, 1337257, 2674514, 5349028, 10698056, 21396112]

約数ペア:

[(1, 21396112), (2, 10698056), (4, 5349028), (8, 2674514), (16, 1337257), (43, 497584), (86, 248792), (137, 156176), (172, 124396), (227, 94256), (274, 78088), (344, 62198), (454, 47128), (548, 39044), (688, 31099), (908, 23564), (1096, 19522), (1816, 11782), (2192, 9761), (3632, 5891)]