18911061

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 31799040

約数和(自身を除く): 12887979

約数列:

[1, 3, 9, 13, 19, 39, 47, 57, 117, 141, 171, 181, 247, 423, 543, 611, 741, 893, 1629, 1833, 2223, 2353, 2679, 3439, 5499, 7059, 8037, 8507, 10317, 11609, 21177, 25521, 30951, 34827, 44707, 76563, 104481, 110591, 134121, 161633, 331773, 402363, 484899, 995319, 1454697, 2101229, 6303687, 18911061]

約数ペア:

[(1, 18911061), (3, 6303687), (9, 2101229), (13, 1454697), (19, 995319), (39, 484899), (47, 402363), (57, 331773), (117, 161633), (141, 134121), (171, 110591), (181, 104481), (247, 76563), (423, 44707), (543, 34827), (611, 30951), (741, 25521), (893, 21177), (1629, 11609), (1833, 10317), (2223, 8507), (2353, 8037), (2679, 7059), (3439, 5499)]