21389392

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{12979}}^1$

素因数の和:13090

約数の個数: 20

約数和(自身を含む): 41847520

約数和(自身を除く): 20458128

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 12979, 25958, 51916, 103832, 207664, 1336837, 2673674, 5347348, 10694696, 21389392]

約数ペア:

[(1, 21389392), (2, 10694696), (4, 5347348), (8, 2673674), (16, 1336837), (103, 207664), (206, 103832), (412, 51916), (824, 25958), (1648, 12979)]