21744531

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 40

約数和(自身を含む): 34848000

約数和(自身を除く): 13103469

約数列:

[1, 3, 9, 19, 27, 57, 71, 81, 171, 199, 213, 513, 597, 639, 1349, 1539, 1791, 1917, 3781, 4047, 5373, 5751, 11343, 12141, 14129, 16119, 34029, 36423, 42387, 102087, 109269, 127161, 268451, 306261, 381483, 805353, 1144449, 2416059, 7248177, 21744531]

約数ペア:

[(1, 21744531), (3, 7248177), (9, 2416059), (19, 1144449), (27, 805353), (57, 381483), (71, 306261), (81, 268451), (171, 127161), (199, 109269), (213, 102087), (513, 42387), (597, 36423), (639, 34029), (1349, 16119), (1539, 14129), (1791, 12141), (1917, 11343), (3781, 5751), (4047, 5373)]