20465585

素因数分解:

$5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{811}}^1$

素因数の和:933

約数の個数: 24

約数和(自身を含む): 28881216

約数和(自身を除く): 8415631

約数列:

[1, 5, 7, 35, 49, 103, 245, 515, 721, 811, 3605, 4055, 5047, 5677, 25235, 28385, 39739, 83533, 198695, 417665, 584731, 2923655, 4093117, 20465585]

約数ペア:

[(1, 20465585), (5, 4093117), (7, 2923655), (35, 584731), (49, 417665), (103, 198695), (245, 83533), (515, 39739), (721, 28385), (811, 25235), (3605, 5677), (4055, 5047)]