21263931

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2089}}^1$

素因数の和:2140

約数の個数: 32

約数和(自身を含む): 35112000

約数和(自身を除く): 13848069

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 261, 351, 377, 783, 1131, 2089, 3393, 6267, 10179, 18801, 27157, 56403, 60581, 81471, 181743, 244413, 545229, 733239, 787553, 1635687, 2362659, 7087977, 21263931]

約数ペア:

[(1, 21263931), (3, 7087977), (9, 2362659), (13, 1635687), (27, 787553), (29, 733239), (39, 545229), (87, 244413), (117, 181743), (261, 81471), (351, 60581), (377, 56403), (783, 27157), (1131, 18801), (2089, 10179), (3393, 6267)]