72000009

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{13267}}^1$

素因数の和:13346

約数の個数: 20

約数和(自身を含む): 109169104

約数和(自身を除く): 37169095

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 5427, 13267, 39801, 119403, 358209, 888889, 1074627, 2666667, 8000001, 24000003, 72000009]

約数ペア:

[(1, 72000009), (3, 24000003), (9, 8000001), (27, 2666667), (67, 1074627), (81, 888889), (201, 358209), (603, 119403), (1809, 39801), (5427, 13267)]