19678281

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 31872000

約数和(自身を除く): 12193719

約数列:

[1, 3, 7, 19, 21, 57, 133, 149, 331, 399, 447, 993, 1043, 2317, 2831, 3129, 6289, 6951, 8493, 18867, 19817, 44023, 49319, 59451, 132069, 147957, 345233, 937061, 1035699, 2811183, 6559427, 19678281]

約数ペア:

[(1, 19678281), (3, 6559427), (7, 2811183), (19, 1035699), (21, 937061), (57, 345233), (133, 147957), (149, 132069), (331, 59451), (399, 49319), (447, 44023), (993, 19817), (1043, 18867), (2317, 8493), (2831, 6951), (3129, 6289)]