21253656

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 56044800

約数和(自身を除く): 34791144

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 92, 138, 139, 184, 276, 277, 278, 417, 552, 554, 556, 831, 834, 1108, 1112, 1662, 1668, 2216, 3197, 3324, 3336, 6371, 6394, 6648, 9591, 12742, 12788, 19113, 19182, 25484, 25576, 38226, 38364, 38503, 50968, 76452, 76728, 77006, 115509, 152904, 154012, 231018, 308024, 462036, 885569, 924072, 1771138, 2656707, 3542276, 5313414, 7084552, 10626828, 21253656]

約数ペア:

[(1, 21253656), (2, 10626828), (3, 7084552), (4, 5313414), (6, 3542276), (8, 2656707), (12, 1771138), (23, 924072), (24, 885569), (46, 462036), (69, 308024), (92, 231018), (138, 154012), (139, 152904), (184, 115509), (276, 77006), (277, 76728), (278, 76452), (417, 50968), (552, 38503), (554, 38364), (556, 38226), (831, 25576), (834, 25484), (1108, 19182), (1112, 19113), (1662, 12788), (1668, 12742), (2216, 9591), (3197, 6648), (3324, 6394), (3336, 6371)]