81413360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145381}}^1$

素因数の和:145401

約数の個数: 40

約数和(自身を含む): 216328416

約数和(自身を除く): 134915056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145381, 290762, 581524, 726905, 1017667, 1163048, 1453810, 2035334, 2326096, 2907620, 4070668, 5088335, 5815240, 8141336, 10176670, 11630480, 16282672, 20353340, 40706680, 81413360]

約数ペア:

[(1, 81413360), (2, 40706680), (4, 20353340), (5, 16282672), (7, 11630480), (8, 10176670), (10, 8141336), (14, 5815240), (16, 5088335), (20, 4070668), (28, 2907620), (35, 2326096), (40, 2035334), (56, 1453810), (70, 1163048), (80, 1017667), (112, 726905), (140, 581524), (280, 290762), (560, 145381)]