21903670480

素因数分解:

$2^4\times 5^1\times {\mathrm{273795881}}^1$

素因数の和:273795894

約数の個数: 20

約数和(自身を含む): 50926034052

約数和(自身を除く): 29022363572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273795881, 547591762, 1095183524, 1368979405, 2190367048, 2737958810, 4380734096, 5475917620, 10951835240, 21903670480]

約数ペア:

[(1, 21903670480), (2, 10951835240), (4, 5475917620), (5, 4380734096), (8, 2737958810), (10, 2190367048), (16, 1368979405), (20, 1095183524), (40, 547591762), (80, 273795881)]