21002427

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{421}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 31862688

約数和(自身を除く): 10860261

約数列:

[1, 3, 9, 23, 69, 207, 241, 421, 723, 1263, 2169, 3789, 5543, 9683, 16629, 29049, 49887, 87147, 101461, 304383, 913149, 2333603, 7000809, 21002427]

約数ペア:

[(1, 21002427), (3, 7000809), (9, 2333603), (23, 913149), (69, 304383), (207, 101461), (241, 87147), (421, 49887), (723, 29049), (1263, 16629), (2169, 9683), (3789, 5543)]