21531960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19937}}^1$

素因数の和:19957

約数の個数: 64

約数和(自身を含む): 71776800

約数和(自身を除く): 50244840

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, 19937, 39874, 59811, 79748, 99685, 119622, 159496, 179433, 199370, 239244, 299055, 358866, 398740, 478488, 538299, 598110, 717732, 797480, 897165, 1076598, 1196220, 1435464, 1794330, 2153196, 2392440, 2691495, 3588660, 4306392, 5382990, 7177320, 10765980, 21531960]

約数ペア:

[(1, 21531960), (2, 10765980), (3, 7177320), (4, 5382990), (5, 4306392), (6, 3588660), (8, 2691495), (9, 2392440), (10, 2153196), (12, 1794330), (15, 1435464), (18, 1196220), (20, 1076598), (24, 897165), (27, 797480), (30, 717732), (36, 598110), (40, 538299), (45, 478488), (54, 398740), (60, 358866), (72, 299055), (90, 239244), (108, 199370), (120, 179433), (135, 159496), (180, 119622), (216, 99685), (270, 79748), (360, 59811), (540, 39874), (1080, 19937)]