21256936

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{1049}}^1$

素因数の和:1221

約数の個数: 32

約数和(自身を含む): 42525000

約数和(自身を除く): 21268064

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 149, 298, 596, 1049, 1192, 2098, 2533, 4196, 5066, 8392, 10132, 17833, 20264, 35666, 71332, 142664, 156301, 312602, 625204, 1250408, 2657117, 5314234, 10628468, 21256936]

約数ペア:

[(1, 21256936), (2, 10628468), (4, 5314234), (8, 2657117), (17, 1250408), (34, 625204), (68, 312602), (136, 156301), (149, 142664), (298, 71332), (596, 35666), (1049, 20264), (1192, 17833), (2098, 10132), (2533, 8392), (4196, 5066)]