20888122

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{491}}^1$

素因数の和:821

約数の個数: 16

約数和(自身を含む): 31881600

約数和(自身を除く): 10993478

約数列:

[1, 2, 89, 178, 239, 478, 491, 982, 21271, 42542, 43699, 87398, 117349, 234698, 10444061, 20888122]

約数ペア:

[(1, 20888122), (2, 10444061), (89, 234698), (178, 117349), (239, 87398), (478, 43699), (491, 42542), (982, 21271)]