215785544

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{66931}}^1$

素因数の和:66981

約数の個数: 32

約数和(自身を含む): 449783040

約数和(自身を除く): 233997496

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 66931, 133862, 267724, 535448, 870103, 1740206, 2074861, 3480412, 4149722, 6960824, 8299444, 16598888, 26973193, 53946386, 107892772, 215785544]

約数ペア:

[(1, 215785544), (2, 107892772), (4, 53946386), (8, 26973193), (13, 16598888), (26, 8299444), (31, 6960824), (52, 4149722), (62, 3480412), (104, 2074861), (124, 1740206), (248, 870103), (403, 535448), (806, 267724), (1612, 133862), (3224, 66931)]