18478240

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10499}}^1$

素因数の和:10525

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 29149760

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, 880, 1760, 10499, 20998, 41996, 52495, 83992, 104990, 115489, 167984, 209980, 230978, 335968, 419960, 461956, 577445, 839920, 923912, 1154890, 1679840, 1847824, 2309780, 3695648, 4619560, 9239120, 18478240]

約数ペア:

[(1, 18478240), (2, 9239120), (4, 4619560), (5, 3695648), (8, 2309780), (10, 1847824), (11, 1679840), (16, 1154890), (20, 923912), (22, 839920), (32, 577445), (40, 461956), (44, 419960), (55, 335968), (80, 230978), (88, 209980), (110, 167984), (160, 115489), (176, 104990), (220, 83992), (352, 52495), (440, 41996), (880, 20998), (1760, 10499)]