21566778

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 49455360

約数和(自身を除く): 27888582

約数列:

[1, 2, 3, 6, 17, 23, 29, 34, 46, 51, 58, 69, 87, 102, 138, 174, 317, 391, 493, 634, 667, 782, 951, 986, 1173, 1334, 1479, 1902, 2001, 2346, 2958, 4002, 5389, 7291, 9193, 10778, 11339, 14582, 16167, 18386, 21873, 22678, 27579, 32334, 34017, 43746, 55158, 68034, 123947, 156281, 211439, 247894, 312562, 371841, 422878, 468843, 634317, 743682, 937686, 1268634, 3594463, 7188926, 10783389, 21566778]

約数ペア:

[(1, 21566778), (2, 10783389), (3, 7188926), (6, 3594463), (17, 1268634), (23, 937686), (29, 743682), (34, 634317), (46, 468843), (51, 422878), (58, 371841), (69, 312562), (87, 247894), (102, 211439), (138, 156281), (174, 123947), (317, 68034), (391, 55158), (493, 43746), (634, 34017), (667, 32334), (782, 27579), (951, 22678), (986, 21873), (1173, 18386), (1334, 16167), (1479, 14582), (1902, 11339), (2001, 10778), (2346, 9193), (2958, 7291), (4002, 5389)]