18745805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{12539}}^1$

素因数の和:12580

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 6534835

約数列:

[1, 5, 13, 23, 65, 115, 299, 1495, 12539, 62695, 163007, 288397, 815035, 1441985, 3749161, 18745805]

約数ペア:

[(1, 18745805), (5, 3749161), (13, 1441985), (23, 815035), (65, 288397), (115, 163007), (299, 62695), (1495, 12539)]