21540585

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6871}}^1$

素因数の和:6909

約数の個数: 32

約数和(自身を含む): 39582720

約数和(自身を除く): 18042135

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6871, 20613, 34355, 75581, 103065, 130549, 226743, 377905, 391647, 652745, 1133715, 1436039, 1958235, 4308117, 7180195, 21540585]

約数ペア:

[(1, 21540585), (3, 7180195), (5, 4308117), (11, 1958235), (15, 1436039), (19, 1133715), (33, 652745), (55, 391647), (57, 377905), (95, 226743), (165, 130549), (209, 103065), (285, 75581), (627, 34355), (1045, 20613), (3135, 6871)]