21904510

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{727}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 19608962

約数列:

[1, 2, 5, 10, 23, 46, 115, 131, 230, 262, 655, 727, 1310, 1454, 3013, 3635, 6026, 7270, 15065, 16721, 30130, 33442, 83605, 95237, 167210, 190474, 476185, 952370, 2190451, 4380902, 10952255, 21904510]

約数ペア:

[(1, 21904510), (2, 10952255), (5, 4380902), (10, 2190451), (23, 952370), (46, 476185), (115, 190474), (131, 167210), (230, 95237), (262, 83605), (655, 33442), (727, 30130), (1310, 16721), (1454, 15065), (3013, 7270), (3635, 6026)]