18915309

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2441}}^1$

素因数の和:2498

約数の個数: 32

約数和(自身を含む): 32820480

約数和(自身を除く): 13905171

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 287, 369, 861, 1107, 2441, 2583, 7323, 7749, 17087, 21969, 51261, 65907, 100081, 153783, 300243, 461349, 700567, 900729, 2101701, 2702187, 6305103, 18915309]

約数ペア:

[(1, 18915309), (3, 6305103), (7, 2702187), (9, 2101701), (21, 900729), (27, 700567), (41, 461349), (63, 300243), (123, 153783), (189, 100081), (287, 65907), (369, 51261), (861, 21969), (1107, 17087), (2441, 7749), (2583, 7323)]