319657975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1979}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 494968320

約数和(自身を除く): 175310345

約数列:

[1, 5, 7, 13, 25, 35, 65, 71, 91, 175, 325, 355, 455, 497, 923, 1775, 1979, 2275, 2485, 4615, 6461, 9895, 12425, 13853, 23075, 25727, 32305, 49475, 69265, 128635, 140509, 161525, 180089, 346325, 643175, 702545, 900445, 983563, 1826617, 3512725, 4502225, 4917815, 9133085, 12786319, 24589075, 45665425, 63931595, 319657975]

約数ペア:

[(1, 319657975), (5, 63931595), (7, 45665425), (13, 24589075), (25, 12786319), (35, 9133085), (65, 4917815), (71, 4502225), (91, 3512725), (175, 1826617), (325, 983563), (355, 900445), (455, 702545), (497, 643175), (923, 346325), (1775, 180089), (1979, 161525), (2275, 140509), (2485, 128635), (4615, 69265), (6461, 49475), (9895, 32305), (12425, 25727), (13853, 23075)]