21940760

素因数分解:

$2^3\times 5^1\times {\mathrm{548519}}^1$

素因数の和:548530

約数の個数: 16

約数和(自身を含む): 49366800

約数和(自身を除く): 27426040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548519, 1097038, 2194076, 2742595, 4388152, 5485190, 10970380, 21940760]

約数ペア:

[(1, 21940760), (2, 10970380), (4, 5485190), (5, 4388152), (8, 2742595), (10, 2194076), (20, 1097038), (40, 548519)]