28161825

素因数分解:

$3^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4219}}^1$

素因数の和:4321

約数の個数: 24

約数和(自身を含む): 47095200

約数和(自身を除く): 18933375

約数列:

[1, 3, 5, 15, 25, 75, 89, 267, 445, 1335, 2225, 4219, 6675, 12657, 21095, 63285, 105475, 316425, 375491, 1126473, 1877455, 5632365, 9387275, 28161825]

約数ペア:

[(1, 28161825), (3, 9387275), (5, 5632365), (15, 1877455), (25, 1126473), (75, 375491), (89, 316425), (267, 105475), (445, 63285), (1335, 21095), (2225, 12657), (4219, 6675)]