87968140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{338339}}^1$

素因数の和:338361

約数の個数: 24

約数和(自身を含む): 198943920

約数和(自身を除く): 110975780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 338339, 676678, 1353356, 1691695, 3383390, 4398407, 6766780, 8796814, 17593628, 21992035, 43984070, 87968140]

約数ペア:

[(1, 87968140), (2, 43984070), (4, 21992035), (5, 17593628), (10, 8796814), (13, 6766780), (20, 4398407), (26, 3383390), (52, 1691695), (65, 1353356), (130, 676678), (260, 338339)]