212864720

素因数分解:

$2^4\times 5^1\times {\mathrm{2660809}}^1$

素因数の和:2660822

約数の個数: 20

約数和(自身を含む): 494910660

約数和(自身を除く): 282045940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2660809, 5321618, 10643236, 13304045, 21286472, 26608090, 42572944, 53216180, 106432360, 212864720]

約数ペア:

[(1, 212864720), (2, 106432360), (4, 53216180), (5, 42572944), (8, 26608090), (10, 21286472), (16, 13304045), (20, 10643236), (40, 5321618), (80, 2660809)]