128689380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1367}}^1$

素因数の和:1905

約数の個数: 72

約数和(自身を含む): 391390272

約数和(自身を除く): 262700892

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 523, 1046, 1367, 1569, 2092, 2615, 2734, 3138, 4101, 4707, 5230, 5468, 6276, 6835, 7845, 8202, 9414, 10460, 12303, 13670, 15690, 16404, 18828, 20505, 23535, 24606, 27340, 31380, 41010, 47070, 49212, 61515, 82020, 94140, 123030, 246060, 714941, 1429882, 2144823, 2859764, 3574705, 4289646, 6434469, 7149410, 8579292, 10724115, 12868938, 14298820, 21448230, 25737876, 32172345, 42896460, 64344690, 128689380]

約数ペア:

[(1, 128689380), (2, 64344690), (3, 42896460), (4, 32172345), (5, 25737876), (6, 21448230), (9, 14298820), (10, 12868938), (12, 10724115), (15, 8579292), (18, 7149410), (20, 6434469), (30, 4289646), (36, 3574705), (45, 2859764), (60, 2144823), (90, 1429882), (180, 714941), (523, 246060), (1046, 123030), (1367, 94140), (1569, 82020), (2092, 61515), (2615, 49212), (2734, 47070), (3138, 41010), (4101, 31380), (4707, 27340), (5230, 24606), (5468, 23535), (6276, 20505), (6835, 18828), (7845, 16404), (8202, 15690), (9414, 13670), (10460, 12303)]