21784914

素因数分解:

$2^1\times 3^2\times {\mathrm{139}}^1\times {\mathrm{8707}}^1$

素因数の和:8854

約数の個数: 24

約数和(自身を含む): 47545680

約数和(自身を除く): 25760766

約数列:

[1, 2, 3, 6, 9, 18, 139, 278, 417, 834, 1251, 2502, 8707, 17414, 26121, 52242, 78363, 156726, 1210273, 2420546, 3630819, 7261638, 10892457, 21784914]

約数ペア:

[(1, 21784914), (2, 10892457), (3, 7261638), (6, 3630819), (9, 2420546), (18, 1210273), (139, 156726), (278, 78363), (417, 52242), (834, 26121), (1251, 17414), (2502, 8707)]