20411985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{383}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19401135

約数列:

[1, 3, 5, 11, 15, 17, 19, 33, 51, 55, 57, 85, 95, 165, 187, 209, 255, 285, 323, 383, 561, 627, 935, 969, 1045, 1149, 1615, 1915, 2805, 3135, 3553, 4213, 4845, 5745, 6511, 7277, 10659, 12639, 17765, 19533, 21065, 21831, 32555, 36385, 53295, 63195, 71621, 80047, 97665, 109155, 123709, 214863, 240141, 358105, 371127, 400235, 618545, 1074315, 1200705, 1360799, 1855635, 4082397, 6803995, 20411985]

約数ペア:

[(1, 20411985), (3, 6803995), (5, 4082397), (11, 1855635), (15, 1360799), (17, 1200705), (19, 1074315), (33, 618545), (51, 400235), (55, 371127), (57, 358105), (85, 240141), (95, 214863), (165, 123709), (187, 109155), (209, 97665), (255, 80047), (285, 71621), (323, 63195), (383, 53295), (561, 36385), (627, 32555), (935, 21831), (969, 21065), (1045, 19533), (1149, 17765), (1615, 12639), (1915, 10659), (2805, 7277), (3135, 6511), (3553, 5745), (4213, 4845)]