18688120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42473}}^1$

素因数の和:42495

約数の個数: 32

約数和(自身を含む): 45871920

約数和(自身を除く): 27183800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42473, 84946, 169892, 212365, 339784, 424730, 467203, 849460, 934406, 1698920, 1868812, 2336015, 3737624, 4672030, 9344060, 18688120]

約数ペア:

[(1, 18688120), (2, 9344060), (4, 4672030), (5, 3737624), (8, 2336015), (10, 1868812), (11, 1698920), (20, 934406), (22, 849460), (40, 467203), (44, 424730), (55, 339784), (88, 212365), (110, 169892), (220, 84946), (440, 42473)]