80781680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144253}}^1$

素因数の和:144273

約数の個数: 40

約数和(自身を含む): 214649952

約数和(自身を除く): 133868272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144253, 288506, 577012, 721265, 1009771, 1154024, 1442530, 2019542, 2308048, 2885060, 4039084, 5048855, 5770120, 8078168, 10097710, 11540240, 16156336, 20195420, 40390840, 80781680]

約数ペア:

[(1, 80781680), (2, 40390840), (4, 20195420), (5, 16156336), (7, 11540240), (8, 10097710), (10, 8078168), (14, 5770120), (16, 5048855), (20, 4039084), (28, 2885060), (35, 2308048), (40, 2019542), (56, 1442530), (70, 1154024), (80, 1009771), (112, 721265), (140, 577012), (280, 288506), (560, 144253)]