31432765

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 16830275

約数列:

[1, 5, 7, 13, 35, 49, 65, 71, 91, 139, 245, 355, 455, 497, 637, 695, 923, 973, 1807, 2485, 3185, 3479, 4615, 4865, 6461, 6811, 9035, 9869, 12649, 17395, 32305, 34055, 45227, 49345, 63245, 69083, 88543, 128297, 226135, 345415, 442715, 483581, 641485, 898079, 2417905, 4490395, 6286553, 31432765]

約数ペア:

[(1, 31432765), (5, 6286553), (7, 4490395), (13, 2417905), (35, 898079), (49, 641485), (65, 483581), (71, 442715), (91, 345415), (139, 226135), (245, 128297), (355, 88543), (455, 69083), (497, 63245), (637, 49345), (695, 45227), (923, 34055), (973, 32305), (1807, 17395), (2485, 12649), (3185, 9869), (3479, 9035), (4615, 6811), (4865, 6461)]