21824560

素因数分解:

$2^4\times 5^1\times {\mathrm{272807}}^1$

素因数の和:272820

約数の個数: 20

約数和(自身を含む): 50742288

約数和(自身を除く): 28917728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272807, 545614, 1091228, 1364035, 2182456, 2728070, 4364912, 5456140, 10912280, 21824560]

約数ペア:

[(1, 21824560), (2, 10912280), (4, 5456140), (5, 4364912), (8, 2728070), (10, 2182456), (16, 1364035), (20, 1091228), (40, 545614), (80, 272807)]