20351565

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1831}}^1$

素因数の和:1874

約数の個数: 48

約数和(自身を含む): 40010880

約数和(自身を除く): 19659315

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1831, 2223, 3705, 5493, 9155, 11115, 16479, 23803, 27465, 34789, 71409, 82395, 104367, 119015, 173945, 214227, 313101, 357045, 452257, 521835, 1071135, 1356771, 1565505, 2261285, 4070313, 6783855, 20351565]

約数ペア:

[(1, 20351565), (3, 6783855), (5, 4070313), (9, 2261285), (13, 1565505), (15, 1356771), (19, 1071135), (39, 521835), (45, 452257), (57, 357045), (65, 313101), (95, 214227), (117, 173945), (171, 119015), (195, 104367), (247, 82395), (285, 71409), (585, 34789), (741, 27465), (855, 23803), (1235, 16479), (1831, 11115), (2223, 9155), (3705, 5493)]