20669120

素因数分解:

$2^6\times 5^1\times {\mathrm{64591}}^1$

素因数の和:64608

約数の個数: 28

約数和(自身を含む): 49219104

約数和(自身を除く): 28549984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64591, 129182, 258364, 322955, 516728, 645910, 1033456, 1291820, 2066912, 2583640, 4133824, 5167280, 10334560, 20669120]

約数ペア:

[(1, 20669120), (2, 10334560), (4, 5167280), (5, 4133824), (8, 2583640), (10, 2066912), (16, 1291820), (20, 1033456), (32, 645910), (40, 516728), (64, 322955), (80, 258364), (160, 129182), (320, 64591)]