20121328

素因数分解:

$2^4\times {\mathrm{631}}^1\times {\mathrm{1993}}^1$

素因数の和:2632

約数の個数: 20

約数和(自身を含む): 39066448

約数和(自身を除く): 18945120

約数列:

[1, 2, 4, 8, 16, 631, 1262, 1993, 2524, 3986, 5048, 7972, 10096, 15944, 31888, 1257583, 2515166, 5030332, 10060664, 20121328]

約数ペア:

[(1, 20121328), (2, 10060664), (4, 5030332), (8, 2515166), (16, 1257583), (631, 31888), (1262, 15944), (1993, 10096), (2524, 7972), (3986, 5048)]