21563668

素因数分解:

$2^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7477}}^1$

素因数の和:7591

約数の個数: 24

約数和(自身を含む): 43551872

約数和(自身を除く): 21988204

約数列:

[1, 2, 4, 7, 14, 28, 103, 206, 412, 721, 1442, 2884, 7477, 14954, 29908, 52339, 104678, 209356, 770131, 1540262, 3080524, 5390917, 10781834, 21563668]

約数ペア:

[(1, 21563668), (2, 10781834), (4, 5390917), (7, 3080524), (14, 1540262), (28, 770131), (103, 209356), (206, 104678), (412, 52339), (721, 29908), (1442, 14954), (2884, 7477)]