21290511

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37951}}^1$

素因数の和:37982

約数の個数: 16

約数和(自身を含む): 32790528

約数和(自身を除く): 11500017

約数列:

[1, 3, 11, 17, 33, 51, 187, 561, 37951, 113853, 417461, 645167, 1252383, 1935501, 7096837, 21290511]

約数ペア:

[(1, 21290511), (3, 7096837), (11, 1935501), (17, 1252383), (33, 645167), (51, 417461), (187, 113853), (561, 37951)]