19999664

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{17123}}^1$

素因数の和:17204

約数の個数: 20

約数和(自身を含む): 39282456

約数和(自身を除く): 19282792

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 17123, 34246, 68492, 136984, 273968, 1249979, 2499958, 4999916, 9999832, 19999664]

約数ペア:

[(1, 19999664), (2, 9999832), (4, 4999916), (8, 2499958), (16, 1249979), (73, 273968), (146, 136984), (292, 68492), (584, 34246), (1168, 17123)]