19868805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 39213720

約数和(自身を除く): 19344915

約数列:

[1, 3, 5, 9, 11, 15, 33, 41, 45, 55, 89, 99, 121, 123, 165, 205, 267, 363, 369, 445, 451, 495, 605, 615, 801, 979, 1089, 1335, 1353, 1815, 1845, 2255, 2937, 3649, 4005, 4059, 4895, 4961, 5445, 6765, 8811, 10769, 10947, 14685, 14883, 18245, 20295, 24805, 32307, 32841, 40139, 44055, 44649, 53845, 54735, 74415, 96921, 120417, 161535, 164205, 200695, 223245, 361251, 441529, 484605, 602085, 1324587, 1806255, 2207645, 3973761, 6622935, 19868805]

約数ペア:

[(1, 19868805), (3, 6622935), (5, 3973761), (9, 2207645), (11, 1806255), (15, 1324587), (33, 602085), (41, 484605), (45, 441529), (55, 361251), (89, 223245), (99, 200695), (121, 164205), (123, 161535), (165, 120417), (205, 96921), (267, 74415), (363, 54735), (369, 53845), (445, 44649), (451, 44055), (495, 40139), (605, 32841), (615, 32307), (801, 24805), (979, 20295), (1089, 18245), (1335, 14883), (1353, 14685), (1815, 10947), (1845, 10769), (2255, 8811), (2937, 6765), (3649, 5445), (4005, 4961), (4059, 4895)]