1000020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{2381}}^1$

素因数の和:2400

約数の個数: 48

約数和(自身を含む): 3201408

約数和(自身を除く): 2201388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 2381, 4762, 7143, 9524, 11905, 14286, 16667, 23810, 28572, 33334, 35715, 47620, 50001, 66668, 71430, 83335, 100002, 142860, 166670, 200004, 250005, 333340, 500010, 1000020]

約数ペア:

[(1, 1000020), (2, 500010), (3, 333340), (4, 250005), (5, 200004), (6, 166670), (7, 142860), (10, 100002), (12, 83335), (14, 71430), (15, 66668), (20, 50001), (21, 47620), (28, 35715), (30, 33334), (35, 28572), (42, 23810), (60, 16667), (70, 14286), (84, 11905), (105, 9524), (140, 7143), (210, 4762), (420, 2381)]