21854788

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2099}}^1$

素因数の和:2259

約数の個数: 24

約数和(自身を含む): 40572000

約数和(自身を除く): 18717212

約数列:

[1, 2, 4, 19, 38, 76, 137, 274, 548, 2099, 2603, 4198, 5206, 8396, 10412, 39881, 79762, 159524, 287563, 575126, 1150252, 5463697, 10927394, 21854788]

約数ペア:

[(1, 21854788), (2, 10927394), (4, 5463697), (19, 1150252), (38, 575126), (76, 287563), (137, 159524), (274, 79762), (548, 39881), (2099, 10412), (2603, 8396), (4198, 5206)]