28781725

素因数分解:

$5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1009}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 41078720

約数和(自身を除く): 12296995

約数列:

[1, 5, 7, 25, 35, 163, 175, 815, 1009, 1141, 4075, 5045, 5705, 7063, 25225, 28525, 35315, 164467, 176575, 822335, 1151269, 4111675, 5756345, 28781725]

約数ペア:

[(1, 28781725), (5, 5756345), (7, 4111675), (25, 1151269), (35, 822335), (163, 176575), (175, 164467), (815, 35315), (1009, 28525), (1141, 25225), (4075, 7063), (5045, 5705)]