78816140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303139}}^1$

素因数の和:303161

約数の個数: 24

約数和(自身を含む): 178246320

約数和(自身を除く): 99430180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303139, 606278, 1212556, 1515695, 3031390, 3940807, 6062780, 7881614, 15763228, 19704035, 39408070, 78816140]

約数ペア:

[(1, 78816140), (2, 39408070), (4, 19704035), (5, 15763228), (10, 7881614), (13, 6062780), (20, 3940807), (26, 3031390), (52, 1515695), (65, 1212556), (130, 606278), (260, 303139)]