28120360

素因数分解:

$2^3\times 5^1\times {\mathrm{727}}^1\times {\mathrm{967}}^1$

素因数の和:1705

約数の個数: 32

約数和(自身を含む): 63423360

約数和(自身を除く): 35303000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 727, 967, 1454, 1934, 2908, 3635, 3868, 4835, 5816, 7270, 7736, 9670, 14540, 19340, 29080, 38680, 703009, 1406018, 2812036, 3515045, 5624072, 7030090, 14060180, 28120360]

約数ペア:

[(1, 28120360), (2, 14060180), (4, 7030090), (5, 5624072), (8, 3515045), (10, 2812036), (20, 1406018), (40, 703009), (727, 38680), (967, 29080), (1454, 19340), (1934, 14540), (2908, 9670), (3635, 7736), (3868, 7270), (4835, 5816)]