20688406

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{1637}}^1$

素因数の和:1799

約数の個数: 16

約数和(自身を含む): 31842720

約数和(自身を除く): 11154314

約数列:

[1, 2, 71, 89, 142, 178, 1637, 3274, 6319, 12638, 116227, 145693, 232454, 291386, 10344203, 20688406]

約数ペア:

[(1, 20688406), (2, 10344203), (71, 291386), (89, 232454), (142, 145693), (178, 116227), (1637, 12638), (3274, 6319)]