20517960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2803}}^1$

素因数の和:2878

約数の個数: 64

約数和(自身を含む): 62585280

約数和(自身を除く): 42067320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2803, 3660, 5606, 7320, 8409, 11212, 14015, 16818, 22424, 28030, 33636, 42045, 56060, 67272, 84090, 112120, 168180, 170983, 336360, 341966, 512949, 683932, 854915, 1025898, 1367864, 1709830, 2051796, 2564745, 3419660, 4103592, 5129490, 6839320, 10258980, 20517960]

約数ペア:

[(1, 20517960), (2, 10258980), (3, 6839320), (4, 5129490), (5, 4103592), (6, 3419660), (8, 2564745), (10, 2051796), (12, 1709830), (15, 1367864), (20, 1025898), (24, 854915), (30, 683932), (40, 512949), (60, 341966), (61, 336360), (120, 170983), (122, 168180), (183, 112120), (244, 84090), (305, 67272), (366, 56060), (488, 42045), (610, 33636), (732, 28030), (915, 22424), (1220, 16818), (1464, 14015), (1830, 11212), (2440, 8409), (2803, 7320), (3660, 5606)]