878240

素因数分解:

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

素因数の和:525

約数の個数: 48

約数和(自身を含む): 2268000

約数和(自身を除く): 1389760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 499, 880, 998, 1760, 1996, 2495, 3992, 4990, 5489, 7984, 9980, 10978, 15968, 19960, 21956, 27445, 39920, 43912, 54890, 79840, 87824, 109780, 175648, 219560, 439120, 878240]

約数ペア:

[(1, 878240), (2, 439120), (4, 219560), (5, 175648), (8, 109780), (10, 87824), (11, 79840), (16, 54890), (20, 43912), (22, 39920), (32, 27445), (40, 21956), (44, 19960), (55, 15968), (80, 10978), (88, 9980), (110, 7984), (160, 5489), (176, 4990), (220, 3992), (352, 2495), (440, 1996), (499, 1760), (880, 998)]