81064880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3389}}^1$

素因数の和:3438

約数の個数: 80

約数和(自身を含む): 211861440

約数和(自身を除く): 130796560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2392, 2990, 3389, 4784, 5980, 6778, 11960, 13556, 16945, 23920, 27112, 33890, 44057, 54224, 67780, 77947, 88114, 135560, 155894, 176228, 220285, 271120, 311788, 352456, 389735, 440570, 623576, 704912, 779470, 881140, 1013311, 1247152, 1558940, 1762280, 2026622, 3117880, 3524560, 4053244, 5066555, 6235760, 8106488, 10133110, 16212976, 20266220, 40532440, 81064880]

約数ペア:

[(1, 81064880), (2, 40532440), (4, 20266220), (5, 16212976), (8, 10133110), (10, 8106488), (13, 6235760), (16, 5066555), (20, 4053244), (23, 3524560), (26, 3117880), (40, 2026622), (46, 1762280), (52, 1558940), (65, 1247152), (80, 1013311), (92, 881140), (104, 779470), (115, 704912), (130, 623576), (184, 440570), (208, 389735), (230, 352456), (260, 311788), (299, 271120), (368, 220285), (460, 176228), (520, 155894), (598, 135560), (920, 88114), (1040, 77947), (1196, 67780), (1495, 54224), (1840, 44057), (2392, 33890), (2990, 27112), (3389, 23920), (4784, 16945), (5980, 13556), (6778, 11960)]