129401920

素因数分解:

$2^6\times 5^1\times {\mathrm{404381}}^1$

素因数の和:404398

約数の個数: 28

約数和(自身を含む): 308139084

約数和(自身を除く): 178737164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 404381, 808762, 1617524, 2021905, 3235048, 4043810, 6470096, 8087620, 12940192, 16175240, 25880384, 32350480, 64700960, 129401920]

約数ペア:

[(1, 129401920), (2, 64700960), (4, 32350480), (5, 25880384), (8, 16175240), (10, 12940192), (16, 8087620), (20, 6470096), (32, 4043810), (40, 3235048), (64, 2021905), (80, 1617524), (160, 808762), (320, 404381)]