20490840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{18973}}^1$

素因数の和:18993

約数の個数: 64

約数和(自身を含む): 68306400

約数和(自身を除く): 47815560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 18973, 37946, 56919, 75892, 94865, 113838, 151784, 170757, 189730, 227676, 284595, 341514, 379460, 455352, 512271, 569190, 683028, 758920, 853785, 1024542, 1138380, 1366056, 1707570, 2049084, 2276760, 2561355, 3415140, 4098168, 5122710, 6830280, 10245420, 20490840]

約数ペア:

[(1, 20490840), (2, 10245420), (3, 6830280), (4, 5122710), (5, 4098168), (6, 3415140), (8, 2561355), (9, 2276760), (10, 2049084), (12, 1707570), (15, 1366056), (18, 1138380), (20, 1024542), (24, 853785), (27, 758920), (30, 683028), (36, 569190), (40, 512271), (45, 455352), (54, 379460), (60, 341514), (72, 284595), (90, 227676), (108, 189730), (120, 170757), (135, 151784), (180, 113838), (216, 94865), (270, 75892), (360, 56919), (540, 37946), (1080, 18973)]