28770625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{3541}}^1$

素因数の和:3574

約数の個数: 20

約数和(自身を含む): 38728228

約数和(自身を除く): 9957603

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 3541, 8125, 17705, 46033, 88525, 230165, 442625, 1150825, 2213125, 5754125, 28770625]

約数ペア:

[(1, 28770625), (5, 5754125), (13, 2213125), (25, 1150825), (65, 442625), (125, 230165), (325, 88525), (625, 46033), (1625, 17705), (3541, 8125)]