289380080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{659}}^1$

素因数の和:1182

約数の個数: 80

約数和(自身を含む): 736560000

約数和(自身を除く): 447179920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 499, 659, 880, 998, 1318, 1996, 2495, 2636, 3295, 3992, 4990, 5272, 5489, 6590, 7249, 7984, 9980, 10544, 10978, 13180, 14498, 19960, 21956, 26360, 27445, 28996, 36245, 39920, 43912, 52720, 54890, 57992, 72490, 87824, 109780, 115984, 144980, 219560, 289960, 328841, 439120, 579920, 657682, 1315364, 1644205, 2630728, 3288410, 3617251, 5261456, 6576820, 7234502, 13153640, 14469004, 18086255, 26307280, 28938008, 36172510, 57876016, 72345020, 144690040, 289380080]

約数ペア:

[(1, 289380080), (2, 144690040), (4, 72345020), (5, 57876016), (8, 36172510), (10, 28938008), (11, 26307280), (16, 18086255), (20, 14469004), (22, 13153640), (40, 7234502), (44, 6576820), (55, 5261456), (80, 3617251), (88, 3288410), (110, 2630728), (176, 1644205), (220, 1315364), (440, 657682), (499, 579920), (659, 439120), (880, 328841), (998, 289960), (1318, 219560), (1996, 144980), (2495, 115984), (2636, 109780), (3295, 87824), (3992, 72490), (4990, 57992), (5272, 54890), (5489, 52720), (6590, 43912), (7249, 39920), (7984, 36245), (9980, 28996), (10544, 27445), (10978, 26360), (13180, 21956), (14498, 19960)]