20649915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3209}}^1$

素因数の和:3244

約数の個数: 48

約数和(自身を含む): 42063840

約数和(自身を除く): 21413925

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3209, 6435, 9627, 16045, 28881, 35299, 41717, 48135, 105897, 125151, 144405, 176495, 208585, 317691, 375453, 458887, 529485, 625755, 1376661, 1588455, 1877265, 2294435, 4129983, 6883305, 20649915]

約数ペア:

[(1, 20649915), (3, 6883305), (5, 4129983), (9, 2294435), (11, 1877265), (13, 1588455), (15, 1376661), (33, 625755), (39, 529485), (45, 458887), (55, 375453), (65, 317691), (99, 208585), (117, 176495), (143, 144405), (165, 125151), (195, 105897), (429, 48135), (495, 41717), (585, 35299), (715, 28881), (1287, 16045), (2145, 9627), (3209, 6435)]