720992027

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{2861}}^1$

素因数の和:3051

約数の個数: 24

約数和(自身を含む): 867872880

約数和(自身を除く): 146880853

約数列:

[1, 7, 37, 49, 139, 259, 973, 1813, 2861, 5143, 6811, 20027, 36001, 105857, 140189, 252007, 397679, 740999, 2783753, 5186993, 14714123, 19486271, 102998861, 720992027]

約数ペア:

[(1, 720992027), (7, 102998861), (37, 19486271), (49, 14714123), (139, 5186993), (259, 2783753), (973, 740999), (1813, 397679), (2861, 252007), (5143, 140189), (6811, 105857), (20027, 36001)]