204021880

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{6481}}^1$

素因数の和:7279

約数の個数: 32

約数和(自身を含む): 459703440

約数和(自身を除く): 255681560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 6481, 7870, 12962, 15740, 25924, 31480, 32405, 51848, 64810, 129620, 259240, 5100547, 10201094, 20402188, 25502735, 40804376, 51005470, 102010940, 204021880]

約数ペア:

[(1, 204021880), (2, 102010940), (4, 51005470), (5, 40804376), (8, 25502735), (10, 20402188), (20, 10201094), (40, 5100547), (787, 259240), (1574, 129620), (3148, 64810), (3935, 51848), (6296, 32405), (6481, 31480), (7870, 25924), (12962, 15740)]