21040160

素因数分解:

$2^5\times 5^1\times {\mathrm{131501}}^1$

素因数の和:131516

約数の個数: 24

約数和(自身を含む): 49707756

約数和(自身を除く): 28667596

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131501, 263002, 526004, 657505, 1052008, 1315010, 2104016, 2630020, 4208032, 5260040, 10520080, 21040160]

約数ペア:

[(1, 21040160), (2, 10520080), (4, 5260040), (5, 4208032), (8, 2630020), (10, 2104016), (16, 1315010), (20, 1052008), (32, 657505), (40, 526004), (80, 263002), (160, 131501)]