18123980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129457}}^1$

素因数の和:129473

約数の個数: 24

約数和(自身を含む): 43497888

約数和(自身を除く): 25373908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129457, 258914, 517828, 647285, 906199, 1294570, 1812398, 2589140, 3624796, 4530995, 9061990, 18123980]

約数ペア:

[(1, 18123980), (2, 9061990), (4, 4530995), (5, 3624796), (7, 2589140), (10, 1812398), (14, 1294570), (20, 906199), (28, 647285), (35, 517828), (70, 258914), (140, 129457)]