20408468

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{271}}^1\times {\mathrm{281}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 36511104

約数和(自身を除く): 16102636

約数列:

[1, 2, 4, 67, 134, 268, 271, 281, 542, 562, 1084, 1124, 18157, 18827, 36314, 37654, 72628, 75308, 76151, 152302, 304604, 5102117, 10204234, 20408468]

約数ペア:

[(1, 20408468), (2, 10204234), (4, 5102117), (67, 304604), (134, 152302), (268, 76151), (271, 75308), (281, 72628), (542, 37654), (562, 36314), (1084, 18827), (1124, 18157)]