20997060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49993}}^1$

素因数の和:50012

約数の個数: 48

約数和(自身を含む): 67191936

約数和(自身を除く): 46194876

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49993, 99986, 149979, 199972, 249965, 299958, 349951, 499930, 599916, 699902, 749895, 999860, 1049853, 1399804, 1499790, 1749755, 2099706, 2999580, 3499510, 4199412, 5249265, 6999020, 10498530, 20997060]

約数ペア:

[(1, 20997060), (2, 10498530), (3, 6999020), (4, 5249265), (5, 4199412), (6, 3499510), (7, 2999580), (10, 2099706), (12, 1749755), (14, 1499790), (15, 1399804), (20, 1049853), (21, 999860), (28, 749895), (30, 699902), (35, 599916), (42, 499930), (60, 349951), (70, 299958), (84, 249965), (105, 199972), (140, 149979), (210, 99986), (420, 49993)]