18856761

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 32532864

約数和(自身を除く): 13676103

約数列:

[1, 3, 7, 11, 21, 33, 41, 77, 121, 123, 181, 231, 287, 363, 451, 543, 847, 861, 1267, 1353, 1991, 2541, 3157, 3801, 4961, 5973, 7421, 9471, 13937, 14883, 21901, 22263, 34727, 41811, 51947, 65703, 81631, 104181, 153307, 155841, 244893, 459921, 571417, 897941, 1714251, 2693823, 6285587, 18856761]

約数ペア:

[(1, 18856761), (3, 6285587), (7, 2693823), (11, 1714251), (21, 897941), (33, 571417), (41, 459921), (77, 244893), (121, 155841), (123, 153307), (181, 104181), (231, 81631), (287, 65703), (363, 51947), (451, 41811), (543, 34727), (847, 22263), (861, 21901), (1267, 14883), (1353, 13937), (1991, 9471), (2541, 7421), (3157, 5973), (3801, 4961)]