20920750

素因数分解:

$2^1\times 5^3\times {\mathrm{67}}^1\times {\mathrm{1249}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 39780000

約数和(自身を除く): 18859250

約数列:

[1, 2, 5, 10, 25, 50, 67, 125, 134, 250, 335, 670, 1249, 1675, 2498, 3350, 6245, 8375, 12490, 16750, 31225, 62450, 83683, 156125, 167366, 312250, 418415, 836830, 2092075, 4184150, 10460375, 20920750]

約数ペア:

[(1, 20920750), (2, 10460375), (5, 4184150), (10, 2092075), (25, 836830), (50, 418415), (67, 312250), (125, 167366), (134, 156125), (250, 83683), (335, 62450), (670, 31225), (1249, 16750), (1675, 12490), (2498, 8375), (3350, 6245)]