21223305

素因数分解:

$3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1879}}^1$

素因数の和:2141

約数の個数: 24

約数和(自身を含む): 36953280

約数和(自身を除く): 15729975

約数列:

[1, 3, 5, 9, 15, 45, 251, 753, 1255, 1879, 2259, 3765, 5637, 9395, 11295, 16911, 28185, 84555, 471629, 1414887, 2358145, 4244661, 7074435, 21223305]

約数ペア:

[(1, 21223305), (3, 7074435), (5, 4244661), (9, 2358145), (15, 1414887), (45, 471629), (251, 84555), (753, 28185), (1255, 16911), (1879, 11295), (2259, 9395), (3765, 5637)]