820560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:292

約数の個数: 80

約数和(自身を含む): 2749824

約数和(自身を除く): 1929264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 263, 312, 390, 520, 526, 624, 780, 789, 1040, 1052, 1315, 1560, 1578, 2104, 2630, 3120, 3156, 3419, 3945, 4208, 5260, 6312, 6838, 7890, 10257, 10520, 12624, 13676, 15780, 17095, 20514, 21040, 27352, 31560, 34190, 41028, 51285, 54704, 63120, 68380, 82056, 102570, 136760, 164112, 205140, 273520, 410280, 820560]

約数ペア:

[(1, 820560), (2, 410280), (3, 273520), (4, 205140), (5, 164112), (6, 136760), (8, 102570), (10, 82056), (12, 68380), (13, 63120), (15, 54704), (16, 51285), (20, 41028), (24, 34190), (26, 31560), (30, 27352), (39, 21040), (40, 20514), (48, 17095), (52, 15780), (60, 13676), (65, 12624), (78, 10520), (80, 10257), (104, 7890), (120, 6838), (130, 6312), (156, 5260), (195, 4208), (208, 3945), (240, 3419), (260, 3156), (263, 3120), (312, 2630), (390, 2104), (520, 1578), (526, 1560), (624, 1315), (780, 1052), (789, 1040)]