20665385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{601}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 27964104

約数和(自身を除く): 7298719

約数列:

[1, 5, 13, 23, 65, 115, 299, 529, 601, 1495, 2645, 3005, 6877, 7813, 13823, 34385, 39065, 69115, 179699, 317929, 898495, 1589645, 4133077, 20665385]

約数ペア:

[(1, 20665385), (5, 4133077), (13, 1589645), (23, 898495), (65, 317929), (115, 179699), (299, 69115), (529, 39065), (601, 34385), (1495, 13823), (2645, 7813), (3005, 6877)]