20032020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1021}}^1$

素因数の和:1145

約数の個数: 72

約数和(自身を含む): 61381320

約数和(自身を除く): 41349300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1021, 1090, 1308, 1635, 1962, 2042, 2180, 3063, 3270, 3924, 4084, 4905, 5105, 6126, 6540, 9189, 9810, 10210, 12252, 15315, 18378, 19620, 20420, 30630, 36756, 45945, 61260, 91890, 111289, 183780, 222578, 333867, 445156, 556445, 667734, 1001601, 1112890, 1335468, 1669335, 2003202, 2225780, 3338670, 4006404, 5008005, 6677340, 10016010, 20032020]

約数ペア:

[(1, 20032020), (2, 10016010), (3, 6677340), (4, 5008005), (5, 4006404), (6, 3338670), (9, 2225780), (10, 2003202), (12, 1669335), (15, 1335468), (18, 1112890), (20, 1001601), (30, 667734), (36, 556445), (45, 445156), (60, 333867), (90, 222578), (109, 183780), (180, 111289), (218, 91890), (327, 61260), (436, 45945), (545, 36756), (654, 30630), (981, 20420), (1021, 19620), (1090, 18378), (1308, 15315), (1635, 12252), (1962, 10210), (2042, 9810), (2180, 9189), (3063, 6540), (3270, 6126), (3924, 5105), (4084, 4905)]