78881380

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{11173}}^1$

素因数の和:11535

約数の個数: 24

約数和(自身を含む): 166135032

約数和(自身を除く): 87253652

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 7060, 11173, 22346, 44692, 55865, 111730, 223460, 3944069, 7888138, 15776276, 19720345, 39440690, 78881380]

約数ペア:

[(1, 78881380), (2, 39440690), (4, 19720345), (5, 15776276), (10, 7888138), (20, 3944069), (353, 223460), (706, 111730), (1412, 55865), (1765, 44692), (3530, 22346), (7060, 11173)]