21230517

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1259}}^1$

素因数の和:1353

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 14573643

約数列:

[1, 3, 7, 11, 21, 33, 73, 77, 219, 231, 511, 803, 1259, 1533, 2409, 3777, 5621, 8813, 13849, 16863, 26439, 41547, 91907, 96943, 275721, 290829, 643349, 1010977, 1930047, 3032931, 7076839, 21230517]

約数ペア:

[(1, 21230517), (3, 7076839), (7, 3032931), (11, 1930047), (21, 1010977), (33, 643349), (73, 290829), (77, 275721), (219, 96943), (231, 91907), (511, 41547), (803, 26439), (1259, 16863), (1533, 13849), (2409, 8813), (3777, 5621)]