218968720

素因数分解:

$2^4\times 5^1\times {\mathrm{2737109}}^1$

素因数の和:2737122

約数の個数: 20

約数和(自身を含む): 509102460

約数和(自身を除く): 290133740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2737109, 5474218, 10948436, 13685545, 21896872, 27371090, 43793744, 54742180, 109484360, 218968720]

約数ペア:

[(1, 218968720), (2, 109484360), (4, 54742180), (5, 43793744), (8, 27371090), (10, 21896872), (16, 13685545), (20, 10948436), (40, 5474218), (80, 2737109)]