64540775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2797}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 87431904

約数和(自身を除く): 22891129

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 923, 1775, 2797, 4615, 13985, 23075, 36361, 69925, 181805, 198587, 909025, 992935, 2581631, 4964675, 12908155, 64540775]

約数ペア:

[(1, 64540775), (5, 12908155), (13, 4964675), (25, 2581631), (65, 992935), (71, 909025), (325, 198587), (355, 181805), (923, 69925), (1775, 36361), (2797, 23075), (4615, 13985)]