80729320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{719}}^1$

素因数の和:1138

約数の個数: 64

約数和(自身を含む): 208396800

約数和(自身を除く): 127667480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 719, 802, 1438, 1604, 2005, 2807, 2876, 3208, 3595, 4010, 5033, 5614, 5752, 7190, 8020, 10066, 11228, 14035, 14380, 16040, 20132, 22456, 25165, 28070, 28760, 40264, 50330, 56140, 100660, 112280, 201320, 288319, 576638, 1153276, 1441595, 2018233, 2306552, 2883190, 4036466, 5766380, 8072932, 10091165, 11532760, 16145864, 20182330, 40364660, 80729320]

約数ペア:

[(1, 80729320), (2, 40364660), (4, 20182330), (5, 16145864), (7, 11532760), (8, 10091165), (10, 8072932), (14, 5766380), (20, 4036466), (28, 2883190), (35, 2306552), (40, 2018233), (56, 1441595), (70, 1153276), (140, 576638), (280, 288319), (401, 201320), (719, 112280), (802, 100660), (1438, 56140), (1604, 50330), (2005, 40264), (2807, 28760), (2876, 28070), (3208, 25165), (3595, 22456), (4010, 20132), (5033, 16040), (5614, 14380), (5752, 14035), (7190, 11228), (8020, 10066)]