21131269628

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1\times {\mathrm{82219}}^1$

素因数の和:82434

約数の個数: 48

約数和(自身を含む): 43206938880

約数和(自身を除く): 22075669252

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 137, 268, 274, 469, 548, 938, 959, 1876, 1918, 3836, 9179, 18358, 36716, 64253, 82219, 128506, 164438, 257012, 328876, 575533, 1151066, 2302132, 5508673, 11017346, 11264003, 22034692, 22528006, 38560711, 45056012, 77121422, 78848021, 154242844, 157696042, 315392084, 754688201, 1509376402, 3018752804, 5282817407, 10565634814, 21131269628]

約数ペア:

[(1, 21131269628), (2, 10565634814), (4, 5282817407), (7, 3018752804), (14, 1509376402), (28, 754688201), (67, 315392084), (134, 157696042), (137, 154242844), (268, 78848021), (274, 77121422), (469, 45056012), (548, 38560711), (938, 22528006), (959, 22034692), (1876, 11264003), (1918, 11017346), (3836, 5508673), (9179, 2302132), (18358, 1151066), (36716, 575533), (64253, 328876), (82219, 257012), (128506, 164438)]