28820225

素因数分解:

$5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4451}}^1$

素因数の和:4505

約数の個数: 24

約数和(自身を含む): 41955648

約数和(自身を除く): 13135423

約数列:

[1, 5, 7, 25, 35, 37, 175, 185, 259, 925, 1295, 4451, 6475, 22255, 31157, 111275, 155785, 164687, 778925, 823435, 1152809, 4117175, 5764045, 28820225]

約数ペア:

[(1, 28820225), (5, 5764045), (7, 4117175), (25, 1152809), (35, 823435), (37, 778925), (175, 164687), (185, 155785), (259, 111275), (925, 31157), (1295, 22255), (4451, 6475)]