80877940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28279}}^1$

素因数の和:28312

約数の個数: 48

約数和(自身を含む): 199543680

約数和(自身を除く): 118665740

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28279, 56558, 113116, 141395, 282790, 311069, 367627, 565580, 622138, 735254, 1244276, 1470508, 1555345, 1838135, 3110690, 3676270, 4043897, 6221380, 7352540, 8087794, 16175588, 20219485, 40438970, 80877940]

約数ペア:

[(1, 80877940), (2, 40438970), (4, 20219485), (5, 16175588), (10, 8087794), (11, 7352540), (13, 6221380), (20, 4043897), (22, 3676270), (26, 3110690), (44, 1838135), (52, 1555345), (55, 1470508), (65, 1244276), (110, 735254), (130, 622138), (143, 565580), (220, 367627), (260, 311069), (286, 282790), (572, 141395), (715, 113116), (1430, 56558), (2860, 28279)]