2888990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 5697216

約数和(自身を除く): 2808226

約数列:

[1, 2, 5, 10, 13, 26, 65, 71, 130, 142, 313, 355, 626, 710, 923, 1565, 1846, 3130, 4069, 4615, 8138, 9230, 20345, 22223, 40690, 44446, 111115, 222230, 288899, 577798, 1444495, 2888990]

約数ペア:

[(1, 2888990), (2, 1444495), (5, 577798), (10, 288899), (13, 222230), (26, 111115), (65, 44446), (71, 40690), (130, 22223), (142, 20345), (313, 9230), (355, 8138), (626, 4615), (710, 4069), (923, 3130), (1565, 1846)]