28722195

素因数分解:

$3^4\times 5^1\times {\mathrm{70919}}^1$

素因数の和:70936

約数の個数: 20

約数和(自身を含む): 51487920

約数和(自身を除く): 22765725

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70919, 212757, 354595, 638271, 1063785, 1914813, 3191355, 5744439, 9574065, 28722195]

約数ペア:

[(1, 28722195), (3, 9574065), (5, 5744439), (9, 3191355), (15, 1914813), (27, 1063785), (45, 638271), (81, 354595), (135, 212757), (405, 70919)]