20685585

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 35118720

約数和(自身を除く): 14433135

約数列:

[1, 3, 5, 15, 19, 57, 95, 181, 285, 401, 543, 905, 1203, 2005, 2715, 3439, 6015, 7619, 10317, 17195, 22857, 38095, 51585, 72581, 114285, 217743, 362905, 1088715, 1379039, 4137117, 6895195, 20685585]

約数ペア:

[(1, 20685585), (3, 6895195), (5, 4137117), (15, 1379039), (19, 1088715), (57, 362905), (95, 217743), (181, 114285), (285, 72581), (401, 51585), (543, 38095), (905, 22857), (1203, 17195), (2005, 10317), (2715, 7619), (3439, 6015)]