20845245

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 36312192

約数和(自身を除く): 15466947

約数列:

[1, 3, 5, 15, 23, 37, 69, 71, 111, 115, 185, 213, 345, 355, 529, 555, 851, 1065, 1587, 1633, 2553, 2627, 2645, 4255, 4899, 7881, 7935, 8165, 12765, 13135, 19573, 24495, 37559, 39405, 58719, 60421, 97865, 112677, 181263, 187795, 293595, 302105, 563385, 906315, 1389683, 4169049, 6948415, 20845245]

約数ペア:

[(1, 20845245), (3, 6948415), (5, 4169049), (15, 1389683), (23, 906315), (37, 563385), (69, 302105), (71, 293595), (111, 187795), (115, 181263), (185, 112677), (213, 97865), (345, 60421), (355, 58719), (529, 39405), (555, 37559), (851, 24495), (1065, 19573), (1587, 13135), (1633, 12765), (2553, 8165), (2627, 7935), (2645, 7881), (4255, 4899)]