21225978

素因数分解:

$2^1\times 3^2\times {\mathrm{421}}^1\times {\mathrm{2801}}^1$

素因数の和:3230

約数の個数: 24

約数和(自身を含む): 46115316

約数和(自身を除く): 24889338

約数列:

[1, 2, 3, 6, 9, 18, 421, 842, 1263, 2526, 2801, 3789, 5602, 7578, 8403, 16806, 25209, 50418, 1179221, 2358442, 3537663, 7075326, 10612989, 21225978]

約数ペア:

[(1, 21225978), (2, 10612989), (3, 7075326), (6, 3537663), (9, 2358442), (18, 1179221), (421, 50418), (842, 25209), (1263, 16806), (2526, 8403), (2801, 7578), (3789, 5602)]