128127560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{291199}}^1$

素因数の和:291221

約数の個数: 32

約数和(自身を含む): 314496000

約数和(自身を除く): 186368440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 291199, 582398, 1164796, 1455995, 2329592, 2911990, 3203189, 5823980, 6406378, 11647960, 12812756, 16015945, 25625512, 32031890, 64063780, 128127560]

約数ペア:

[(1, 128127560), (2, 64063780), (4, 32031890), (5, 25625512), (8, 16015945), (10, 12812756), (11, 11647960), (20, 6406378), (22, 5823980), (40, 3203189), (44, 2911990), (55, 2329592), (88, 1455995), (110, 1164796), (220, 582398), (440, 291199)]