21808215

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3389}}^1$

素因数の和:3424

約数の個数: 48

約数和(自身を含む): 44422560

約数和(自身を除く): 22614345

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3389, 6435, 10167, 16945, 30501, 37279, 44057, 50835, 111837, 132171, 152505, 186395, 220285, 335511, 396513, 484627, 559185, 660855, 1453881, 1677555, 1982565, 2423135, 4361643, 7269405, 21808215]

約数ペア:

[(1, 21808215), (3, 7269405), (5, 4361643), (9, 2423135), (11, 1982565), (13, 1677555), (15, 1453881), (33, 660855), (39, 559185), (45, 484627), (55, 396513), (65, 335511), (99, 220285), (117, 186395), (143, 152505), (165, 132171), (195, 111837), (429, 50835), (495, 44057), (585, 37279), (715, 30501), (1287, 16945), (2145, 10167), (3389, 6435)]