21710815

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{10169}}^1$

素因数の和:10242

約数の個数: 16

約数和(自身を含む): 30265920

約数和(自身を除く): 8555105

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 10169, 50845, 71183, 355915, 620309, 3101545, 4342163, 21710815]

約数ペア:

[(1, 21710815), (5, 4342163), (7, 3101545), (35, 620309), (61, 355915), (305, 71183), (427, 50845), (2135, 10169)]