20192500

素因数分解:

$2^2\times 5^4\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:262

約数の個数: 60

約数和(自身を含む): 45463572

約数和(自身を除く): 25271072

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 197, 205, 250, 394, 410, 500, 625, 788, 820, 985, 1025, 1250, 1970, 2050, 2500, 3940, 4100, 4925, 5125, 8077, 9850, 10250, 16154, 19700, 20500, 24625, 25625, 32308, 40385, 49250, 51250, 80770, 98500, 102500, 123125, 161540, 201925, 246250, 403850, 492500, 807700, 1009625, 2019250, 4038500, 5048125, 10096250, 20192500]

約数ペア:

[(1, 20192500), (2, 10096250), (4, 5048125), (5, 4038500), (10, 2019250), (20, 1009625), (25, 807700), (41, 492500), (50, 403850), (82, 246250), (100, 201925), (125, 161540), (164, 123125), (197, 102500), (205, 98500), (250, 80770), (394, 51250), (410, 49250), (500, 40385), (625, 32308), (788, 25625), (820, 24625), (985, 20500), (1025, 19700), (1250, 16154), (1970, 10250), (2050, 9850), (2500, 8077), (3940, 5125), (4100, 4925)]