21015159

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{277}}^1$

素因数の和:332

約数の個数: 32

約数和(自身を含む): 32559360

約数和(自身を除く): 11544201

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 277, 363, 627, 831, 1331, 2299, 3047, 3993, 5263, 6897, 9141, 15789, 25289, 33517, 57893, 75867, 100551, 173679, 368687, 636823, 1106061, 1910469, 7005053, 21015159]

約数ペア:

[(1, 21015159), (3, 7005053), (11, 1910469), (19, 1106061), (33, 636823), (57, 368687), (121, 173679), (209, 100551), (277, 75867), (363, 57893), (627, 33517), (831, 25289), (1331, 15789), (2299, 9141), (3047, 6897), (3993, 5263)]