20146875

素因数分解:

$3^1\times 5^5\times 7^1\times {\mathrm{307}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 38497536

約数和(自身を除く): 18350661

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 307, 375, 525, 625, 875, 921, 1535, 1875, 2149, 2625, 3125, 4375, 4605, 6447, 7675, 9375, 10745, 13125, 21875, 23025, 32235, 38375, 53725, 65625, 115125, 161175, 191875, 268625, 575625, 805875, 959375, 1343125, 2878125, 4029375, 6715625, 20146875]

約数ペア:

[(1, 20146875), (3, 6715625), (5, 4029375), (7, 2878125), (15, 1343125), (21, 959375), (25, 805875), (35, 575625), (75, 268625), (105, 191875), (125, 161175), (175, 115125), (307, 65625), (375, 53725), (525, 38375), (625, 32235), (875, 23025), (921, 21875), (1535, 13125), (1875, 10745), (2149, 9375), (2625, 7675), (3125, 6447), (4375, 4605)]