78567680

素因数分解:

$2^8\times 5^1\times {\mathrm{61381}}^1$

素因数の和:61402

約数の個数: 36

約数和(自身を含む): 188197212

約数和(自身を除く): 109629532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 61381, 122762, 245524, 306905, 491048, 613810, 982096, 1227620, 1964192, 2455240, 3928384, 4910480, 7856768, 9820960, 15713536, 19641920, 39283840, 78567680]

約数ペア:

[(1, 78567680), (2, 39283840), (4, 19641920), (5, 15713536), (8, 9820960), (10, 7856768), (16, 4910480), (20, 3928384), (32, 2455240), (40, 1964192), (64, 1227620), (80, 982096), (128, 613810), (160, 491048), (256, 306905), (320, 245524), (640, 122762), (1280, 61381)]