21724960

素因数分解:

$2^5\times 5^1\times {\mathrm{135781}}^1$

素因数の和:135796

約数の個数: 24

約数和(自身を含む): 51325596

約数和(自身を除く): 29600636

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135781, 271562, 543124, 678905, 1086248, 1357810, 2172496, 2715620, 4344992, 5431240, 10862480, 21724960]

約数ペア:

[(1, 21724960), (2, 10862480), (4, 5431240), (5, 4344992), (8, 2715620), (10, 2172496), (16, 1357810), (20, 1086248), (32, 678905), (40, 543124), (80, 271562), (160, 135781)]