21180688

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42703}}^1$

素因数の和:42742

約数の個数: 20

約数和(自身を含む): 42362368

約数和(自身を除く): 21181680

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42703, 85406, 170812, 341624, 683248, 1323793, 2647586, 5295172, 10590344, 21180688]

約数ペア:

[(1, 21180688), (2, 10590344), (4, 5295172), (8, 2647586), (16, 1323793), (31, 683248), (62, 341624), (124, 170812), (248, 85406), (496, 42703)]