81266458

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 160634880

約数和(自身を除く): 79368422

約数列:

[1, 2, 7, 13, 14, 19, 26, 38, 71, 91, 133, 142, 182, 247, 266, 331, 494, 497, 662, 923, 994, 1349, 1729, 1846, 2317, 2698, 3458, 4303, 4634, 6289, 6461, 8606, 9443, 12578, 12922, 17537, 18886, 23501, 30121, 35074, 44023, 47002, 60242, 81757, 88046, 122759, 163514, 164507, 245518, 305513, 329014, 446519, 572299, 611026, 893038, 1144598, 2138591, 3125633, 4277182, 5804747, 6251266, 11609494, 40633229, 81266458]

約数ペア:

[(1, 81266458), (2, 40633229), (7, 11609494), (13, 6251266), (14, 5804747), (19, 4277182), (26, 3125633), (38, 2138591), (71, 1144598), (91, 893038), (133, 611026), (142, 572299), (182, 446519), (247, 329014), (266, 305513), (331, 245518), (494, 164507), (497, 163514), (662, 122759), (923, 88046), (994, 81757), (1349, 60242), (1729, 47002), (1846, 44023), (2317, 35074), (2698, 30121), (3458, 23501), (4303, 18886), (4634, 17537), (6289, 12922), (6461, 12578), (8606, 9443)]