21162540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50387}}^1$

素因数の和:50406

約数の個数: 48

約数和(自身を含む): 67721472

約数和(自身を除く): 46558932

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, 50387, 100774, 151161, 201548, 251935, 302322, 352709, 503870, 604644, 705418, 755805, 1007740, 1058127, 1410836, 1511610, 1763545, 2116254, 3023220, 3527090, 4232508, 5290635, 7054180, 10581270, 21162540]

約数ペア:

[(1, 21162540), (2, 10581270), (3, 7054180), (4, 5290635), (5, 4232508), (6, 3527090), (7, 3023220), (10, 2116254), (12, 1763545), (14, 1511610), (15, 1410836), (20, 1058127), (21, 1007740), (28, 755805), (30, 705418), (35, 604644), (42, 503870), (60, 352709), (70, 302322), (84, 251935), (105, 201548), (140, 151161), (210, 100774), (420, 50387)]