20919245

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{1549}}^1$

素因数の和:1664

約数の個数: 16

約数和(自身を含む): 26151600

約数和(自身を除く): 5232355

約数列:

[1, 5, 37, 73, 185, 365, 1549, 2701, 7745, 13505, 57313, 113077, 286565, 565385, 4183849, 20919245]

約数ペア:

[(1, 20919245), (5, 4183849), (37, 565385), (73, 286565), (185, 113077), (365, 57313), (1549, 13505), (2701, 7745)]