81628280

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{5881}}^1$

素因数の和:6239

約数の個数: 32

約数和(自身を含む): 184224240

約数和(自身を除く): 102595960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2776, 3470, 5881, 6940, 11762, 13880, 23524, 29405, 47048, 58810, 117620, 235240, 2040707, 4081414, 8162828, 10203535, 16325656, 20407070, 40814140, 81628280]

約数ペア:

[(1, 81628280), (2, 40814140), (4, 20407070), (5, 16325656), (8, 10203535), (10, 8162828), (20, 4081414), (40, 2040707), (347, 235240), (694, 117620), (1388, 58810), (1735, 47048), (2776, 29405), (3470, 23524), (5881, 13880), (6940, 11762)]