21342123

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1409}}^1$

素因数の和:1449

約数の個数: 40

約数和(自身を含む): 36851760

約数和(自身を除く): 15509637

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 99, 153, 187, 297, 459, 561, 891, 1377, 1409, 1683, 4227, 5049, 12681, 15147, 15499, 23953, 38043, 46497, 71859, 114129, 139491, 215577, 263483, 418473, 646731, 790449, 1255419, 1940193, 2371347, 7114041, 21342123]

約数ペア:

[(1, 21342123), (3, 7114041), (9, 2371347), (11, 1940193), (17, 1255419), (27, 790449), (33, 646731), (51, 418473), (81, 263483), (99, 215577), (153, 139491), (187, 114129), (297, 71859), (459, 46497), (561, 38043), (891, 23953), (1377, 15499), (1409, 15147), (1683, 12681), (4227, 5049)]