20545625

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{463}}^1$

素因数の和:554

約数の個数: 20

約数和(自身を含む): 26091648

約数和(自身を除く): 5546023

約数列:

[1, 5, 25, 71, 125, 355, 463, 625, 1775, 2315, 8875, 11575, 32873, 44375, 57875, 164365, 289375, 821825, 4109125, 20545625]

約数ペア:

[(1, 20545625), (5, 4109125), (25, 821825), (71, 289375), (125, 164365), (355, 57875), (463, 44375), (625, 32873), (1775, 11575), (2315, 8875)]