3980500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 9172800

約数和(自身を除く): 5192300

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 419, 475, 500, 838, 950, 1676, 1900, 2095, 2375, 4190, 4750, 7961, 8380, 9500, 10475, 15922, 20950, 31844, 39805, 41900, 52375, 79610, 104750, 159220, 199025, 209500, 398050, 796100, 995125, 1990250, 3980500]

約数ペア:

[(1, 3980500), (2, 1990250), (4, 995125), (5, 796100), (10, 398050), (19, 209500), (20, 199025), (25, 159220), (38, 104750), (50, 79610), (76, 52375), (95, 41900), (100, 39805), (125, 31844), (190, 20950), (250, 15922), (380, 10475), (419, 9500), (475, 8380), (500, 7961), (838, 4750), (950, 4190), (1676, 2375), (1900, 2095)]