18997209

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 34744320

約数和(自身を除く): 15747111

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 79, 99, 231, 237, 347, 553, 693, 711, 869, 1041, 1659, 2429, 2607, 3123, 3817, 4977, 6083, 7287, 7821, 11451, 18249, 21861, 26719, 27413, 34353, 54747, 80157, 82239, 191891, 240471, 246717, 301543, 575673, 904629, 1727019, 2110801, 2713887, 6332403, 18997209]

約数ペア:

[(1, 18997209), (3, 6332403), (7, 2713887), (9, 2110801), (11, 1727019), (21, 904629), (33, 575673), (63, 301543), (77, 246717), (79, 240471), (99, 191891), (231, 82239), (237, 80157), (347, 54747), (553, 34353), (693, 27413), (711, 26719), (869, 21861), (1041, 18249), (1659, 11451), (2429, 7821), (2607, 7287), (3123, 6083), (3817, 4977)]