20921329

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6361}}^1$

素因数の和:6408

約数の個数: 16

約数和(自身を含む): 25651584

約数和(自身を除く): 4730255

約数列:

[1, 11, 13, 23, 143, 253, 299, 3289, 6361, 69971, 82693, 146303, 909623, 1609333, 1901939, 20921329]

約数ペア:

[(1, 20921329), (11, 1901939), (13, 1609333), (23, 909623), (143, 146303), (253, 82693), (299, 69971), (3289, 6361)]