20218500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{4493}}^1$

素因数の和:4518

約数の個数: 72

約数和(自身を含む): 63796824

約数和(自身を除く): 43578324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 750, 900, 1125, 1500, 2250, 4493, 4500, 8986, 13479, 17972, 22465, 26958, 40437, 44930, 53916, 67395, 80874, 89860, 112325, 134790, 161748, 202185, 224650, 269580, 336975, 404370, 449300, 561625, 673950, 808740, 1010925, 1123250, 1347900, 1684875, 2021850, 2246500, 3369750, 4043700, 5054625, 6739500, 10109250, 20218500]

約数ペア:

[(1, 20218500), (2, 10109250), (3, 6739500), (4, 5054625), (5, 4043700), (6, 3369750), (9, 2246500), (10, 2021850), (12, 1684875), (15, 1347900), (18, 1123250), (20, 1010925), (25, 808740), (30, 673950), (36, 561625), (45, 449300), (50, 404370), (60, 336975), (75, 269580), (90, 224650), (100, 202185), (125, 161748), (150, 134790), (180, 112325), (225, 89860), (250, 80874), (300, 67395), (375, 53916), (450, 44930), (500, 40437), (750, 26958), (900, 22465), (1125, 17972), (1500, 13479), (2250, 8986), (4493, 4500)]