21282880

素因数分解:

$2^6\times 5^1\times {\mathrm{66509}}^1$

素因数の和:66526

約数の個数: 28

約数和(自身を含む): 50680620

約数和(自身を除く): 29397740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66509, 133018, 266036, 332545, 532072, 665090, 1064144, 1330180, 2128288, 2660360, 4256576, 5320720, 10641440, 21282880]

約数ペア:

[(1, 21282880), (2, 10641440), (4, 5320720), (5, 4256576), (8, 2660360), (10, 2128288), (16, 1330180), (20, 1064144), (32, 665090), (40, 532072), (64, 332545), (80, 266036), (160, 133018), (320, 66509)]