21103412985

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{383}}^2$

素因数の和:939

約数の個数: 72

約数和(自身を含む): 38544891840

約数和(自身を除く): 17441478855

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 139, 207, 345, 383, 417, 695, 1035, 1149, 1251, 1915, 2085, 3197, 3447, 5745, 6255, 8809, 9591, 15985, 17235, 26427, 28773, 44045, 47955, 53237, 79281, 132135, 143865, 146689, 159711, 266185, 396405, 440067, 479133, 733445, 798555, 1224451, 1320201, 2200335, 2395665, 3373847, 3673353, 6122255, 6601005, 10121541, 11020059, 16869235, 18366765, 20389771, 30364623, 50607705, 55100295, 61169313, 101948855, 151823115, 183507939, 305846565, 468964733, 917539695, 1406894199, 2344823665, 4220682597, 7034470995, 21103412985]

約数ペア:

[(1, 21103412985), (3, 7034470995), (5, 4220682597), (9, 2344823665), (15, 1406894199), (23, 917539695), (45, 468964733), (69, 305846565), (115, 183507939), (139, 151823115), (207, 101948855), (345, 61169313), (383, 55100295), (417, 50607705), (695, 30364623), (1035, 20389771), (1149, 18366765), (1251, 16869235), (1915, 11020059), (2085, 10121541), (3197, 6601005), (3447, 6122255), (5745, 3673353), (6255, 3373847), (8809, 2395665), (9591, 2200335), (15985, 1320201), (17235, 1224451), (26427, 798555), (28773, 733445), (44045, 479133), (47955, 440067), (53237, 396405), (79281, 266185), (132135, 159711), (143865, 146689)]