31205000

素因数分解:

$2^3\times 5^4\times {\mathrm{79}}^2$

素因数の和:184

約数の個数: 60

約数和(自身を含む): 74050515

約数和(自身を除く): 42845515

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 158, 200, 250, 316, 395, 500, 625, 632, 790, 1000, 1250, 1580, 1975, 2500, 3160, 3950, 5000, 6241, 7900, 9875, 12482, 15800, 19750, 24964, 31205, 39500, 49375, 49928, 62410, 79000, 98750, 124820, 156025, 197500, 249640, 312050, 395000, 624100, 780125, 1248200, 1560250, 3120500, 3900625, 6241000, 7801250, 15602500, 31205000]

約数ペア:

[(1, 31205000), (2, 15602500), (4, 7801250), (5, 6241000), (8, 3900625), (10, 3120500), (20, 1560250), (25, 1248200), (40, 780125), (50, 624100), (79, 395000), (100, 312050), (125, 249640), (158, 197500), (200, 156025), (250, 124820), (316, 98750), (395, 79000), (500, 62410), (625, 49928), (632, 49375), (790, 39500), (1000, 31205), (1250, 24964), (1580, 19750), (1975, 15800), (2500, 12482), (3160, 9875), (3950, 7900), (5000, 6241)]