21052178

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20599}}^1$

素因数の和:20681

約数の個数: 16

約数和(自身を含む): 36585600

約数和(自身を除く): 15533422

約数列:

[1, 2, 7, 14, 73, 146, 511, 1022, 20599, 41198, 144193, 288386, 1503727, 3007454, 10526089, 21052178]

約数ペア:

[(1, 21052178), (2, 10526089), (7, 3007454), (14, 1503727), (73, 288386), (146, 144193), (511, 41198), (1022, 20599)]