81751460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4201}}^1$

素因数の和:4356

約数の個数: 48

約数和(自身を含む): 197662080

約数和(自身を除く): 115910620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4201, 4865, 8402, 9730, 16804, 19460, 21005, 29407, 42010, 58814, 84020, 117628, 147035, 294070, 583939, 588140, 1167878, 2335756, 2919695, 4087573, 5839390, 8175146, 11678780, 16350292, 20437865, 40875730, 81751460]

約数ペア:

[(1, 81751460), (2, 40875730), (4, 20437865), (5, 16350292), (7, 11678780), (10, 8175146), (14, 5839390), (20, 4087573), (28, 2919695), (35, 2335756), (70, 1167878), (139, 588140), (140, 583939), (278, 294070), (556, 147035), (695, 117628), (973, 84020), (1390, 58814), (1946, 42010), (2780, 29407), (3892, 21005), (4201, 19460), (4865, 16804), (8402, 9730)]