21465980

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4813}}^1$

素因数の和:5045

約数の個数: 24

約数和(自身を含む): 45290112

約数和(自身を除く): 23824132

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4460, 4813, 9626, 19252, 24065, 48130, 96260, 1073299, 2146598, 4293196, 5366495, 10732990, 21465980]

約数ペア:

[(1, 21465980), (2, 10732990), (4, 5366495), (5, 4293196), (10, 2146598), (20, 1073299), (223, 96260), (446, 48130), (892, 24065), (1115, 19252), (2230, 9626), (4460, 4813)]