28826320

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{881}}^1$

素因数の和:1303

約数の個数: 40

約数和(自身を含む): 67261320

約数和(自身を除く): 38435000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 881, 1636, 1762, 2045, 3272, 3524, 4090, 4405, 6544, 7048, 8180, 8810, 14096, 16360, 17620, 32720, 35240, 70480, 360329, 720658, 1441316, 1801645, 2882632, 3603290, 5765264, 7206580, 14413160, 28826320]

約数ペア:

[(1, 28826320), (2, 14413160), (4, 7206580), (5, 5765264), (8, 3603290), (10, 2882632), (16, 1801645), (20, 1441316), (40, 720658), (80, 360329), (409, 70480), (818, 35240), (881, 32720), (1636, 17620), (1762, 16360), (2045, 14096), (3272, 8810), (3524, 8180), (4090, 7048), (4405, 6544)]