21502864

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10259}}^1$

素因数の和:10398

約数の個数: 20

約数和(自身を含む): 41983920

約数和(自身を除く): 20481056

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10259, 20518, 41036, 82072, 164144, 1343929, 2687858, 5375716, 10751432, 21502864]

約数ペア:

[(1, 21502864), (2, 10751432), (4, 5375716), (8, 2687858), (16, 1343929), (131, 164144), (262, 82072), (524, 41036), (1048, 20518), (2096, 10259)]