28211430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72337}}^1$

素因数の和:72360

約数の個数: 32

約数和(自身を含む): 72916704

約数和(自身を除く): 44705274

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72337, 144674, 217011, 361685, 434022, 723370, 940381, 1085055, 1880762, 2170110, 2821143, 4701905, 5642286, 9403810, 14105715, 28211430]

約数ペア:

[(1, 28211430), (2, 14105715), (3, 9403810), (5, 5642286), (6, 4701905), (10, 2821143), (13, 2170110), (15, 1880762), (26, 1085055), (30, 940381), (39, 723370), (65, 434022), (78, 361685), (130, 217011), (195, 144674), (390, 72337)]