20976207

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 33702912

約数和(自身を除く): 12726705

約数列:

[1, 3, 7, 21, 23, 69, 137, 161, 317, 411, 483, 951, 959, 2219, 2877, 3151, 6657, 7291, 9453, 21873, 22057, 43429, 51037, 66171, 130287, 153111, 304003, 912009, 998867, 2996601, 6992069, 20976207]

約数ペア:

[(1, 20976207), (3, 6992069), (7, 2996601), (21, 998867), (23, 912009), (69, 304003), (137, 153111), (161, 130287), (317, 66171), (411, 51037), (483, 43429), (951, 22057), (959, 21873), (2219, 9453), (2877, 7291), (3151, 6657)]