21824720

素因数分解:

$2^4\times 5^1\times {\mathrm{272809}}^1$

素因数の和:272822

約数の個数: 20

約数和(自身を含む): 50742660

約数和(自身を除く): 28917940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272809, 545618, 1091236, 1364045, 2182472, 2728090, 4364944, 5456180, 10912360, 21824720]

約数ペア:

[(1, 21824720), (2, 10912360), (4, 5456180), (5, 4364944), (8, 2728090), (10, 2182472), (16, 1364045), (20, 1091236), (40, 545618), (80, 272809)]