8520540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{20287}}^1$

素因数の和:20306

約数の個数: 48

約数和(自身を含む): 27267072

約数和(自身を除く): 18746532

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, 20287, 40574, 60861, 81148, 101435, 121722, 142009, 202870, 243444, 284018, 304305, 405740, 426027, 568036, 608610, 710045, 852054, 1217220, 1420090, 1704108, 2130135, 2840180, 4260270, 8520540]

約数ペア:

[(1, 8520540), (2, 4260270), (3, 2840180), (4, 2130135), (5, 1704108), (6, 1420090), (7, 1217220), (10, 852054), (12, 710045), (14, 608610), (15, 568036), (20, 426027), (21, 405740), (28, 304305), (30, 284018), (35, 243444), (42, 202870), (60, 142009), (70, 121722), (84, 101435), (105, 81148), (140, 60861), (210, 40574), (420, 20287)]