21043210

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{15139}}^1$

素因数の和:15285

約数の個数: 16

約数和(自身を含む): 38152800

約数和(自身を除く): 17109590

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 15139, 30278, 75695, 151390, 2104321, 4208642, 10521605, 21043210]

約数ペア:

[(1, 21043210), (2, 10521605), (5, 4208642), (10, 2104321), (139, 151390), (278, 75695), (695, 30278), (1390, 15139)]