20749260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:535

約数の個数: 96

約数和(自身を含む): 67092480

約数和(自身を除く): 46343220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 127, 140, 210, 254, 381, 389, 420, 508, 635, 762, 778, 889, 1167, 1270, 1524, 1556, 1778, 1905, 1945, 2334, 2540, 2667, 2723, 3556, 3810, 3890, 4445, 4668, 5334, 5446, 5835, 7620, 7780, 8169, 8890, 10668, 10892, 11670, 13335, 13615, 16338, 17780, 23340, 26670, 27230, 32676, 40845, 49403, 53340, 54460, 81690, 98806, 148209, 163380, 197612, 247015, 296418, 345821, 494030, 592836, 691642, 741045, 988060, 1037463, 1383284, 1482090, 1729105, 2074926, 2964180, 3458210, 4149852, 5187315, 6916420, 10374630, 20749260]

約数ペア:

[(1, 20749260), (2, 10374630), (3, 6916420), (4, 5187315), (5, 4149852), (6, 3458210), (7, 2964180), (10, 2074926), (12, 1729105), (14, 1482090), (15, 1383284), (20, 1037463), (21, 988060), (28, 741045), (30, 691642), (35, 592836), (42, 494030), (60, 345821), (70, 296418), (84, 247015), (105, 197612), (127, 163380), (140, 148209), (210, 98806), (254, 81690), (381, 54460), (389, 53340), (420, 49403), (508, 40845), (635, 32676), (762, 27230), (778, 26670), (889, 23340), (1167, 17780), (1270, 16338), (1524, 13615), (1556, 13335), (1778, 11670), (1905, 10892), (1945, 10668), (2334, 8890), (2540, 8169), (2667, 7780), (2723, 7620), (3556, 5835), (3810, 5446), (3890, 5334), (4445, 4668)]