21640712

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{26263}}^1$

素因数の和:26372

約数の個数: 16

約数和(自身を含む): 40971840

約数和(自身を除く): 19331128

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 26263, 52526, 105052, 210104, 2705089, 5410178, 10820356, 21640712]

約数ペア:

[(1, 21640712), (2, 10820356), (4, 5410178), (8, 2705089), (103, 210104), (206, 105052), (412, 52526), (824, 26263)]