2666820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{263}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 8116416

約数和(自身を除く): 5449596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 263, 338, 390, 507, 526, 676, 780, 789, 845, 1014, 1052, 1315, 1578, 1690, 2028, 2535, 2630, 3156, 3380, 3419, 3945, 5070, 5260, 6838, 7890, 10140, 10257, 13676, 15780, 17095, 20514, 34190, 41028, 44447, 51285, 68380, 88894, 102570, 133341, 177788, 205140, 222235, 266682, 444470, 533364, 666705, 888940, 1333410, 2666820]

約数ペア:

[(1, 2666820), (2, 1333410), (3, 888940), (4, 666705), (5, 533364), (6, 444470), (10, 266682), (12, 222235), (13, 205140), (15, 177788), (20, 133341), (26, 102570), (30, 88894), (39, 68380), (52, 51285), (60, 44447), (65, 41028), (78, 34190), (130, 20514), (156, 17095), (169, 15780), (195, 13676), (260, 10257), (263, 10140), (338, 7890), (390, 6838), (507, 5260), (526, 5070), (676, 3945), (780, 3419), (789, 3380), (845, 3156), (1014, 2630), (1052, 2535), (1315, 2028), (1578, 1690)]