20986245

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3919}}^1$

素因数の和:3954

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23043195

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3919, 5355, 11757, 19595, 27433, 35271, 58785, 66623, 82299, 137165, 176355, 199869, 246897, 333115, 411495, 466361, 599607, 999345, 1234485, 1399083, 2331805, 2998035, 4197249, 6995415, 20986245]

約数ペア:

[(1, 20986245), (3, 6995415), (5, 4197249), (7, 2998035), (9, 2331805), (15, 1399083), (17, 1234485), (21, 999345), (35, 599607), (45, 466361), (51, 411495), (63, 333115), (85, 246897), (105, 199869), (119, 176355), (153, 137165), (255, 82299), (315, 66623), (357, 58785), (595, 35271), (765, 27433), (1071, 19595), (1785, 11757), (3919, 5355)]