77997940

素因数分解:

$2^2\times 5^1\times {\mathrm{863}}^1\times {\mathrm{4519}}^1$

素因数の和:5391

約数の個数: 24

約数和(自身を含む): 164021760

約数和(自身を除く): 86023820

約数列:

[1, 2, 4, 5, 10, 20, 863, 1726, 3452, 4315, 4519, 8630, 9038, 17260, 18076, 22595, 45190, 90380, 3899897, 7799794, 15599588, 19499485, 38998970, 77997940]

約数ペア:

[(1, 77997940), (2, 38998970), (4, 19499485), (5, 15599588), (10, 7799794), (20, 3899897), (863, 90380), (1726, 45190), (3452, 22595), (4315, 18076), (4519, 17260), (8630, 9038)]