640936738

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{6551}}^1$

素因数の和:6690

約数の個数: 32

約数和(自身を含む): 1069915392

約数和(自身を除く): 428978654

約数列:

[1, 2, 13, 26, 53, 71, 106, 142, 689, 923, 1378, 1846, 3763, 6551, 7526, 13102, 48919, 85163, 97838, 170326, 347203, 465121, 694406, 930242, 4513639, 6046573, 9027278, 12093146, 24651413, 49302826, 320468369, 640936738]

約数ペア:

[(1, 640936738), (2, 320468369), (13, 49302826), (26, 24651413), (53, 12093146), (71, 9027278), (106, 6046573), (142, 4513639), (689, 930242), (923, 694406), (1378, 465121), (1846, 347203), (3763, 170326), (6551, 97838), (7526, 85163), (13102, 48919)]