31281393

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 50595840

約数和(自身を除く): 19314447

約数列:

[1, 3, 11, 13, 33, 39, 71, 79, 143, 169, 213, 237, 429, 507, 781, 869, 923, 1027, 1859, 2343, 2607, 2769, 3081, 5577, 5609, 10153, 11297, 11999, 13351, 16827, 30459, 33891, 35997, 40053, 61699, 72917, 131989, 146861, 185097, 218751, 395967, 440583, 802087, 947921, 2406261, 2843763, 10427131, 31281393]

約数ペア:

[(1, 31281393), (3, 10427131), (11, 2843763), (13, 2406261), (33, 947921), (39, 802087), (71, 440583), (79, 395967), (143, 218751), (169, 185097), (213, 146861), (237, 131989), (429, 72917), (507, 61699), (781, 40053), (869, 35997), (923, 33891), (1027, 30459), (1859, 16827), (2343, 13351), (2607, 11999), (2769, 11297), (3081, 10153), (5577, 5609)]