561454640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 1381541040

約数和(自身を除く): 820086400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 67, 80, 109, 124, 134, 155, 218, 248, 268, 310, 335, 436, 496, 536, 545, 620, 670, 872, 961, 1072, 1090, 1240, 1340, 1744, 1922, 2077, 2180, 2480, 2680, 3379, 3844, 4154, 4360, 4805, 5360, 6758, 7303, 7688, 8308, 8720, 9610, 10385, 13516, 14606, 15376, 16616, 16895, 19220, 20770, 27032, 29212, 33232, 33790, 36515, 38440, 41540, 54064, 58424, 64387, 67580, 73030, 76880, 83080, 104749, 116848, 128774, 135160, 146060, 166160, 209498, 226393, 257548, 270320, 292120, 321935, 418996, 452786, 515096, 523745, 584240, 643870, 837992, 905572, 1030192, 1047490, 1131965, 1287740, 1675984, 1811144, 2094980, 2263930, 2575480, 3622288, 4189960, 4527860, 5150960, 7018183, 8379920, 9055720, 14036366, 18111440, 28072732, 35090915, 56145464, 70181830, 112290928, 140363660, 280727320, 561454640]

約数ペア:

[(1, 561454640), (2, 280727320), (4, 140363660), (5, 112290928), (8, 70181830), (10, 56145464), (16, 35090915), (20, 28072732), (31, 18111440), (40, 14036366), (62, 9055720), (67, 8379920), (80, 7018183), (109, 5150960), (124, 4527860), (134, 4189960), (155, 3622288), (218, 2575480), (248, 2263930), (268, 2094980), (310, 1811144), (335, 1675984), (436, 1287740), (496, 1131965), (536, 1047490), (545, 1030192), (620, 905572), (670, 837992), (872, 643870), (961, 584240), (1072, 523745), (1090, 515096), (1240, 452786), (1340, 418996), (1744, 321935), (1922, 292120), (2077, 270320), (2180, 257548), (2480, 226393), (2680, 209498), (3379, 166160), (3844, 146060), (4154, 135160), (4360, 128774), (4805, 116848), (5360, 104749), (6758, 83080), (7303, 76880), (7688, 73030), (8308, 67580), (8720, 64387), (9610, 58424), (10385, 54064), (13516, 41540), (14606, 38440), (15376, 36515), (16616, 33790), (16895, 33232), (19220, 29212), (20770, 27032)]