16980180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{40429}}^1$

素因数の和:40448

約数の個数: 48

約数和(自身を含む): 54337920

約数和(自身を除く): 37357740

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, 40429, 80858, 121287, 161716, 202145, 242574, 283003, 404290, 485148, 566006, 606435, 808580, 849009, 1132012, 1212870, 1415015, 1698018, 2425740, 2830030, 3396036, 4245045, 5660060, 8490090, 16980180]

約数ペア:

[(1, 16980180), (2, 8490090), (3, 5660060), (4, 4245045), (5, 3396036), (6, 2830030), (7, 2425740), (10, 1698018), (12, 1415015), (14, 1212870), (15, 1132012), (20, 849009), (21, 808580), (28, 606435), (30, 566006), (35, 485148), (42, 404290), (60, 283003), (70, 242574), (84, 202145), (105, 161716), (140, 121287), (210, 80858), (420, 40429)]