21263795

素因数分解:

$5^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{379}}^1$

素因数の和:627

約数の個数: 24

約数和(自身を含む): 29890800

約数和(自身を除く): 8627005

約数列:

[1, 5, 7, 35, 49, 229, 245, 379, 1145, 1603, 1895, 2653, 8015, 11221, 13265, 18571, 56105, 86791, 92855, 433955, 607537, 3037685, 4252759, 21263795]

約数ペア:

[(1, 21263795), (5, 4252759), (7, 3037685), (35, 607537), (49, 433955), (229, 92855), (245, 86791), (379, 56105), (1145, 18571), (1603, 13265), (1895, 11221), (2653, 8015)]