20959965

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 40604928

約数和(自身を除く): 19644963

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1327, 1755, 3159, 3981, 5265, 6635, 11943, 15795, 17251, 19905, 35829, 51753, 59715, 86255, 107487, 155259, 179145, 258765, 322461, 465777, 537435, 776295, 1397331, 1612305, 2328885, 4191993, 6986655, 20959965]

約数ペア:

[(1, 20959965), (3, 6986655), (5, 4191993), (9, 2328885), (13, 1612305), (15, 1397331), (27, 776295), (39, 537435), (45, 465777), (65, 322461), (81, 258765), (117, 179145), (135, 155259), (195, 107487), (243, 86255), (351, 59715), (405, 51753), (585, 35829), (1053, 19905), (1215, 17251), (1327, 15795), (1755, 11943), (3159, 6635), (3981, 5265)]