20640900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9829}}^1$

素因数の和:9853

約数の個数: 72

約数和(自身を含む): 68259520

約数和(自身を除く): 47618620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9829, 19658, 29487, 39316, 49145, 58974, 68803, 98290, 117948, 137606, 147435, 196580, 206409, 245725, 275212, 294870, 344015, 412818, 491450, 589740, 688030, 737175, 825636, 982900, 1032045, 1376060, 1474350, 1720075, 2064090, 2948700, 3440150, 4128180, 5160225, 6880300, 10320450, 20640900]

約数ペア:

[(1, 20640900), (2, 10320450), (3, 6880300), (4, 5160225), (5, 4128180), (6, 3440150), (7, 2948700), (10, 2064090), (12, 1720075), (14, 1474350), (15, 1376060), (20, 1032045), (21, 982900), (25, 825636), (28, 737175), (30, 688030), (35, 589740), (42, 491450), (50, 412818), (60, 344015), (70, 294870), (75, 275212), (84, 245725), (100, 206409), (105, 196580), (140, 147435), (150, 137606), (175, 117948), (210, 98290), (300, 68803), (350, 58974), (420, 49145), (525, 39316), (700, 29487), (1050, 19658), (2100, 9829)]