21243831

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19087}}^1$

素因数の和:19150

約数の個数: 16

約数和(自身を含む): 32984064

約数和(自身を除く): 11740233

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19087, 57261, 133609, 400827, 1011611, 3034833, 7081277, 21243831]

約数ペア:

[(1, 21243831), (3, 7081277), (7, 3034833), (21, 1011611), (53, 400827), (159, 133609), (371, 57261), (1113, 19087)]