81397980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{491}}^1$

素因数の和:816

約数の個数: 96

約数和(自身を含む): 254580480

約数和(自身を除く): 173182500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 307, 491, 540, 614, 921, 982, 1228, 1473, 1535, 1842, 1964, 2455, 2763, 2946, 3070, 3684, 4419, 4605, 4910, 5526, 5892, 6140, 7365, 8289, 8838, 9210, 9820, 11052, 13257, 13815, 14730, 16578, 17676, 18420, 22095, 26514, 27630, 29460, 33156, 41445, 44190, 53028, 55260, 66285, 82890, 88380, 132570, 150737, 165780, 265140, 301474, 452211, 602948, 753685, 904422, 1356633, 1507370, 1808844, 2261055, 2713266, 3014740, 4069899, 4522110, 5426532, 6783165, 8139798, 9044220, 13566330, 16279596, 20349495, 27132660, 40698990, 81397980]

約数ペア:

[(1, 81397980), (2, 40698990), (3, 27132660), (4, 20349495), (5, 16279596), (6, 13566330), (9, 9044220), (10, 8139798), (12, 6783165), (15, 5426532), (18, 4522110), (20, 4069899), (27, 3014740), (30, 2713266), (36, 2261055), (45, 1808844), (54, 1507370), (60, 1356633), (90, 904422), (108, 753685), (135, 602948), (180, 452211), (270, 301474), (307, 265140), (491, 165780), (540, 150737), (614, 132570), (921, 88380), (982, 82890), (1228, 66285), (1473, 55260), (1535, 53028), (1842, 44190), (1964, 41445), (2455, 33156), (2763, 29460), (2946, 27630), (3070, 26514), (3684, 22095), (4419, 18420), (4605, 17676), (4910, 16578), (5526, 14730), (5892, 13815), (6140, 13257), (7365, 11052), (8289, 9820), (8838, 9210)]