215868961

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 36

約数和(自身を含む): 288199296

約数和(自身を除く): 72330335

約数列:

[1, 7, 11, 23, 49, 77, 121, 161, 253, 539, 847, 1127, 1583, 1771, 2783, 5929, 11081, 12397, 17413, 19481, 36409, 77567, 121891, 136367, 191543, 254863, 400499, 853237, 1340801, 1784041, 2803493, 4405489, 9385607, 19624451, 30838423, 215868961]

約数ペア:

[(1, 215868961), (7, 30838423), (11, 19624451), (23, 9385607), (49, 4405489), (77, 2803493), (121, 1784041), (161, 1340801), (253, 853237), (539, 400499), (847, 254863), (1127, 191543), (1583, 136367), (1771, 121891), (2783, 77567), (5929, 36409), (11081, 19481), (12397, 17413)]