201990512920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{21881}}^1\times {\mathrm{32969}}^1$

素因数の和:54868

約数の個数: 64

約数和(自身を含む): 519443668800

約数和(自身を除く): 317453155880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 21881, 32969, 43762, 65938, 87524, 109405, 131876, 153167, 164845, 175048, 218810, 230783, 263752, 306334, 329690, 437620, 461566, 612668, 659380, 765835, 875240, 923132, 1153915, 1225336, 1318760, 1531670, 1846264, 2307830, 3063340, 4615660, 6126680, 9231320, 721394689, 1442789378, 2885578756, 3606973445, 5049762823, 5771157512, 7213946890, 10099525646, 14427893780, 20199051292, 25248814115, 28855787560, 40398102584, 50497628230, 100995256460, 201990512920]

約数ペア:

[(1, 201990512920), (2, 100995256460), (4, 50497628230), (5, 40398102584), (7, 28855787560), (8, 25248814115), (10, 20199051292), (14, 14427893780), (20, 10099525646), (28, 7213946890), (35, 5771157512), (40, 5049762823), (56, 3606973445), (70, 2885578756), (140, 1442789378), (280, 721394689), (21881, 9231320), (32969, 6126680), (43762, 4615660), (65938, 3063340), (87524, 2307830), (109405, 1846264), (131876, 1531670), (153167, 1318760), (164845, 1225336), (175048, 1153915), (218810, 923132), (230783, 875240), (263752, 765835), (306334, 659380), (329690, 612668), (437620, 461566)]