19824805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 33965568

約数和(自身を除く): 14140763

約数列:

[1, 5, 7, 11, 13, 17, 35, 55, 65, 77, 85, 91, 119, 143, 187, 221, 233, 385, 455, 595, 715, 935, 1001, 1105, 1165, 1309, 1547, 1631, 2431, 2563, 3029, 3961, 5005, 6545, 7735, 8155, 12155, 12815, 15145, 17017, 17941, 19805, 21203, 27727, 33319, 43571, 51493, 85085, 89705, 106015, 138635, 166595, 217855, 233233, 257465, 304997, 360451, 566423, 1166165, 1524985, 1802255, 2832115, 3964961, 19824805]

約数ペア:

[(1, 19824805), (5, 3964961), (7, 2832115), (11, 1802255), (13, 1524985), (17, 1166165), (35, 566423), (55, 360451), (65, 304997), (77, 257465), (85, 233233), (91, 217855), (119, 166595), (143, 138635), (187, 106015), (221, 89705), (233, 85085), (385, 51493), (455, 43571), (595, 33319), (715, 27727), (935, 21203), (1001, 19805), (1105, 17941), (1165, 17017), (1309, 15145), (1547, 12815), (1631, 12155), (2431, 8155), (2563, 7735), (3029, 6545), (3961, 5005)]