20628153

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{283}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 37215360

約数和(自身を除く): 16587207

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 89, 91, 117, 267, 273, 283, 623, 801, 819, 849, 1157, 1869, 1981, 2547, 3471, 3679, 5607, 5943, 8099, 10413, 11037, 17829, 24297, 25187, 25753, 33111, 72891, 75561, 77259, 176309, 226683, 231777, 327431, 528927, 982293, 1586781, 2292017, 2946879, 6876051, 20628153]

約数ペア:

[(1, 20628153), (3, 6876051), (7, 2946879), (9, 2292017), (13, 1586781), (21, 982293), (39, 528927), (63, 327431), (89, 231777), (91, 226683), (117, 176309), (267, 77259), (273, 75561), (283, 72891), (623, 33111), (801, 25753), (819, 25187), (849, 24297), (1157, 17829), (1869, 11037), (1981, 10413), (2547, 8099), (3471, 5943), (3679, 5607)]