21141081

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1181}}^1$

素因数の和:1223

約数の個数: 40

約数和(自身を含む): 36041544

約数和(自身を除く): 14900463

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 459, 663, 1053, 1181, 1377, 1989, 3543, 5967, 10629, 15353, 17901, 20077, 31887, 46059, 60231, 95661, 138177, 180693, 261001, 414531, 542079, 783003, 1243593, 1626237, 2349009, 7047027, 21141081]

約数ペア:

[(1, 21141081), (3, 7047027), (9, 2349009), (13, 1626237), (17, 1243593), (27, 783003), (39, 542079), (51, 414531), (81, 261001), (117, 180693), (153, 138177), (221, 95661), (351, 60231), (459, 46059), (663, 31887), (1053, 20077), (1181, 17901), (1377, 15353), (1989, 10629), (3543, 5967)]