21654604

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{499}}^1\times {\mathrm{571}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 40040000

約数和(自身を除く): 18385396

約数列:

[1, 2, 4, 19, 38, 76, 499, 571, 998, 1142, 1996, 2284, 9481, 10849, 18962, 21698, 37924, 43396, 284929, 569858, 1139716, 5413651, 10827302, 21654604]

約数ペア:

[(1, 21654604), (2, 10827302), (4, 5413651), (19, 1139716), (38, 569858), (76, 284929), (499, 43396), (571, 37924), (998, 21698), (1142, 18962), (1996, 10849), (2284, 9481)]