21490045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4813}}^1$

素因数の和:4884

約数の個数: 16

約数和(自身を含む): 27728640

約数和(自身を除く): 6238595

約数列:

[1, 5, 19, 47, 95, 235, 893, 4465, 4813, 24065, 91447, 226211, 457235, 1131055, 4298009, 21490045]

約数ペア:

[(1, 21490045), (5, 4298009), (19, 1131055), (47, 457235), (95, 226211), (235, 91447), (893, 24065), (4465, 4813)]