28888925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 38997504

約数和(自身を除く): 10108579

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 863, 1339, 2575, 4315, 6695, 11219, 21575, 33475, 56095, 88889, 280475, 444445, 1155557, 2222225, 5777785, 28888925]

約数ペア:

[(1, 28888925), (5, 5777785), (13, 2222225), (25, 1155557), (65, 444445), (103, 280475), (325, 88889), (515, 56095), (863, 33475), (1339, 21575), (2575, 11219), (4315, 6695)]