64198940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246919}}^1$

素因数の和:246941

約数の個数: 24

約数和(自身を含む): 145188960

約数和(自身を除く): 80990020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 246919, 493838, 987676, 1234595, 2469190, 3209947, 4938380, 6419894, 12839788, 16049735, 32099470, 64198940]

約数ペア:

[(1, 64198940), (2, 32099470), (4, 16049735), (5, 12839788), (10, 6419894), (13, 4938380), (20, 3209947), (26, 2469190), (52, 1234595), (65, 987676), (130, 493838), (260, 246919)]