19281955

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 30260160

約数和(自身を除く): 10978205

約数列:

[1, 5, 7, 11, 29, 35, 55, 77, 121, 145, 157, 203, 319, 385, 605, 785, 847, 1015, 1099, 1595, 1727, 2233, 3509, 4235, 4553, 5495, 8635, 11165, 12089, 17545, 18997, 22765, 24563, 31871, 50083, 60445, 94985, 122815, 132979, 159355, 250415, 350581, 550913, 664895, 1752905, 2754565, 3856391, 19281955]

約数ペア:

[(1, 19281955), (5, 3856391), (7, 2754565), (11, 1752905), (29, 664895), (35, 550913), (55, 350581), (77, 250415), (121, 159355), (145, 132979), (157, 122815), (203, 94985), (319, 60445), (385, 50083), (605, 31871), (785, 24563), (847, 22765), (1015, 18997), (1099, 17545), (1595, 12089), (1727, 11165), (2233, 8635), (3509, 5495), (4235, 4553)]