820804580

素因数分解:

$2^2\times 5^1\times {\mathrm{3691}}^1\times {\mathrm{11119}}^1$

素因数の和:14819

約数の個数: 24

約数和(自身を含む): 1724311680

約数和(自身を除く): 903507100

約数列:

[1, 2, 4, 5, 10, 20, 3691, 7382, 11119, 14764, 18455, 22238, 36910, 44476, 55595, 73820, 111190, 222380, 41040229, 82080458, 164160916, 205201145, 410402290, 820804580]

約数ペア:

[(1, 820804580), (2, 410402290), (4, 205201145), (5, 164160916), (10, 82080458), (20, 41040229), (3691, 222380), (7382, 111190), (11119, 73820), (14764, 55595), (18455, 44476), (22238, 36910)]