64162220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{40609}}^1$

素因数の和:40697

約数の個数: 24

約数和(自身を含む): 136449600

約数和(自身を除く): 72287380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 40609, 81218, 162436, 203045, 406090, 812180, 3208111, 6416222, 12832444, 16040555, 32081110, 64162220]

約数ペア:

[(1, 64162220), (2, 32081110), (4, 16040555), (5, 12832444), (10, 6416222), (20, 3208111), (79, 812180), (158, 406090), (316, 203045), (395, 162436), (790, 81218), (1580, 40609)]