21264005

素因数分解:

$5^1\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1123}}^1$

素因数の和:1676

約数の個数: 16

約数和(自身を含む): 29241984

約数和(自身を除く): 7977979

約数列:

[1, 5, 7, 35, 541, 1123, 2705, 3787, 5615, 7861, 18935, 39305, 607543, 3037715, 4252801, 21264005]

約数ペア:

[(1, 21264005), (5, 4252801), (7, 3037715), (35, 607543), (541, 39305), (1123, 18935), (2705, 7861), (3787, 5615)]