689903525

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{2081}}^1$

素因数の和:2329

約数の個数: 24

約数和(自身を含む): 871317000

約数和(自身を除く): 181413475

約数列:

[1, 5, 25, 89, 149, 445, 745, 2081, 2225, 3725, 10405, 13261, 52025, 66305, 185209, 310069, 331525, 926045, 1550345, 4630225, 7751725, 27596141, 137980705, 689903525]

約数ペア:

[(1, 689903525), (5, 137980705), (25, 27596141), (89, 7751725), (149, 4630225), (445, 1550345), (745, 926045), (2081, 331525), (2225, 310069), (3725, 185209), (10405, 66305), (13261, 52025)]