21309435

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1109}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 42943680

約数和(自身を除く): 21634245

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 61, 63, 105, 183, 305, 315, 427, 549, 915, 1109, 1281, 2135, 2745, 3327, 3843, 5545, 6405, 7763, 9981, 16635, 19215, 23289, 38815, 49905, 67649, 69867, 116445, 202947, 338245, 349335, 473543, 608841, 1014735, 1420629, 2367715, 3044205, 4261887, 7103145, 21309435]

約数ペア:

[(1, 21309435), (3, 7103145), (5, 4261887), (7, 3044205), (9, 2367715), (15, 1420629), (21, 1014735), (35, 608841), (45, 473543), (61, 349335), (63, 338245), (105, 202947), (183, 116445), (305, 69867), (315, 67649), (427, 49905), (549, 38815), (915, 23289), (1109, 19215), (1281, 16635), (2135, 9981), (2745, 7763), (3327, 6405), (3843, 5545)]