21485295

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1933}}^1$

素因数の和:1976

約数の個数: 48

約数和(自身を含む): 42238560

約数和(自身を除く): 20753265

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1933, 2223, 3705, 5799, 9665, 11115, 17397, 25129, 28995, 36727, 75387, 86985, 110181, 125645, 183635, 226161, 330543, 376935, 477451, 550905, 1130805, 1432353, 1652715, 2387255, 4297059, 7161765, 21485295]

約数ペア:

[(1, 21485295), (3, 7161765), (5, 4297059), (9, 2387255), (13, 1652715), (15, 1432353), (19, 1130805), (39, 550905), (45, 477451), (57, 376935), (65, 330543), (95, 226161), (117, 183635), (171, 125645), (195, 110181), (247, 86985), (285, 75387), (585, 36727), (741, 28995), (855, 25129), (1235, 17397), (1933, 11115), (2223, 9665), (3705, 5799)]