289960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{659}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 712800

約数和(自身を除く): 422840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 659, 1318, 2636, 3295, 5272, 6590, 7249, 13180, 14498, 26360, 28996, 36245, 57992, 72490, 144980, 289960]

約数ペア:

[(1, 289960), (2, 144980), (4, 72490), (5, 57992), (8, 36245), (10, 28996), (11, 26360), (20, 14498), (22, 13180), (40, 7249), (44, 6590), (55, 5272), (88, 3295), (110, 2636), (220, 1318), (440, 659)]