21271178

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{1637}}^1$

素因数の和:1801

約数の個数: 16

約数和(自身を含む): 32727240

約数和(自身を除く): 11456062

約数列:

[1, 2, 73, 89, 146, 178, 1637, 3274, 6497, 12994, 119501, 145693, 239002, 291386, 10635589, 21271178]

約数ペア:

[(1, 21271178), (2, 10635589), (73, 291386), (89, 239002), (146, 145693), (178, 119501), (1637, 12994), (3274, 6497)]