28364375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3491}}^1$

素因数の和:3524

約数の個数: 20

約数和(自身を含む): 38181528

約数和(自身を除く): 9817153

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3491, 8125, 17455, 45383, 87275, 226915, 436375, 1134575, 2181875, 5672875, 28364375]

約数ペア:

[(1, 28364375), (5, 5672875), (13, 2181875), (25, 1134575), (65, 436375), (125, 226915), (325, 87275), (625, 45383), (1625, 17455), (3491, 8125)]