21437815

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{21121}}^1$

素因数の和:21162

約数の個数: 16

約数和(自身を含む): 30415680

約数和(自身を除く): 8977865

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 21121, 105605, 147847, 612509, 739235, 3062545, 4287563, 21437815]

約数ペア:

[(1, 21437815), (5, 4287563), (7, 3062545), (29, 739235), (35, 612509), (145, 147847), (203, 105605), (1015, 21121)]