19781145

素因数分解:

$3^3\times 5^1\times {\mathrm{146527}}^1$

素因数の和:146541

約数の個数: 16

約数和(自身を含む): 35166720

約数和(自身を除く): 15385575

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 146527, 439581, 732635, 1318743, 2197905, 3956229, 6593715, 19781145]

約数ペア:

[(1, 19781145), (3, 6593715), (5, 3956229), (9, 2197905), (15, 1318743), (27, 732635), (45, 439581), (135, 146527)]