20545161

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{827}}^1$

素因数の和:870

約数の個数: 36

約数和(自身を含む): 34547472

約数和(自身を除く): 14002311

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 507, 637, 827, 1183, 1911, 2481, 3549, 5789, 8281, 10751, 17367, 24843, 32253, 40523, 75257, 121569, 139763, 225771, 419289, 526799, 978341, 1580397, 2935023, 6848387, 20545161]

約数ペア:

[(1, 20545161), (3, 6848387), (7, 2935023), (13, 1580397), (21, 978341), (39, 526799), (49, 419289), (91, 225771), (147, 139763), (169, 121569), (273, 75257), (507, 40523), (637, 32253), (827, 24843), (1183, 17367), (1911, 10751), (2481, 8281), (3549, 5789)]