164990420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{4481}}^1$

素因数の和:4760

約数の個数: 48

約数和(自身を含む): 397571328

約数和(自身を除く): 232580908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 526, 1052, 1315, 1841, 2630, 3682, 4481, 5260, 7364, 8962, 9205, 17924, 18410, 22405, 31367, 36820, 44810, 62734, 89620, 125468, 156835, 313670, 627340, 1178503, 2357006, 4714012, 5892515, 8249521, 11785030, 16499042, 23570060, 32998084, 41247605, 82495210, 164990420]

約数ペア:

[(1, 164990420), (2, 82495210), (4, 41247605), (5, 32998084), (7, 23570060), (10, 16499042), (14, 11785030), (20, 8249521), (28, 5892515), (35, 4714012), (70, 2357006), (140, 1178503), (263, 627340), (526, 313670), (1052, 156835), (1315, 125468), (1841, 89620), (2630, 62734), (3682, 44810), (4481, 36820), (5260, 31367), (7364, 22405), (8962, 18410), (9205, 17924)]