28764825

素因数分解:

$3^1\times 5^2\times {\mathrm{421}}^1\times {\mathrm{911}}^1$

素因数の和:1345

約数の個数: 24

約数和(自身を含む): 47723136

約数和(自身を除く): 18958311

約数列:

[1, 3, 5, 15, 25, 75, 421, 911, 1263, 2105, 2733, 4555, 6315, 10525, 13665, 22775, 31575, 68325, 383531, 1150593, 1917655, 5752965, 9588275, 28764825]

約数ペア:

[(1, 28764825), (3, 9588275), (5, 5752965), (15, 1917655), (25, 1150593), (75, 383531), (421, 68325), (911, 31575), (1263, 22775), (2105, 13665), (2733, 10525), (4555, 6315)]