21120540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50287}}^1$

素因数の和:50306

約数の個数: 48

約数和(自身を含む): 67587072

約数和(自身を除く): 46466532

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, 50287, 100574, 150861, 201148, 251435, 301722, 352009, 502870, 603444, 704018, 754305, 1005740, 1056027, 1408036, 1508610, 1760045, 2112054, 3017220, 3520090, 4224108, 5280135, 7040180, 10560270, 21120540]

約数ペア:

[(1, 21120540), (2, 10560270), (3, 7040180), (4, 5280135), (5, 4224108), (6, 3520090), (7, 3017220), (10, 2112054), (12, 1760045), (14, 1508610), (15, 1408036), (20, 1056027), (21, 1005740), (28, 754305), (30, 704018), (35, 603444), (42, 502870), (60, 352009), (70, 301722), (84, 251435), (105, 201148), (140, 150861), (210, 100574), (420, 50287)]