261581880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{311407}}^1$

素因数の和:311428

約数の個数: 64

約数和(自身を含む): 896855040

約数和(自身を除く): 635273160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 311407, 622814, 934221, 1245628, 1557035, 1868442, 2179849, 2491256, 3114070, 3736884, 4359698, 4671105, 6228140, 6539547, 7473768, 8719396, 9342210, 10899245, 12456280, 13079094, 17438792, 18684420, 21798490, 26158188, 32697735, 37368840, 43596980, 52316376, 65395470, 87193960, 130790940, 261581880]

約数ペア:

[(1, 261581880), (2, 130790940), (3, 87193960), (4, 65395470), (5, 52316376), (6, 43596980), (7, 37368840), (8, 32697735), (10, 26158188), (12, 21798490), (14, 18684420), (15, 17438792), (20, 13079094), (21, 12456280), (24, 10899245), (28, 9342210), (30, 8719396), (35, 7473768), (40, 6539547), (42, 6228140), (56, 4671105), (60, 4359698), (70, 3736884), (84, 3114070), (105, 2491256), (120, 2179849), (140, 1868442), (168, 1557035), (210, 1245628), (280, 934221), (420, 622814), (840, 311407)]