18219568

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{337}}^1$

素因数の和:485

約数の個数: 40

約数和(自身を含む): 36882560

約数和(自身を除く): 18662992

約数列:

[1, 2, 4, 8, 16, 31, 62, 109, 124, 218, 248, 337, 436, 496, 674, 872, 1348, 1744, 2696, 3379, 5392, 6758, 10447, 13516, 20894, 27032, 36733, 41788, 54064, 73466, 83576, 146932, 167152, 293864, 587728, 1138723, 2277446, 4554892, 9109784, 18219568]

約数ペア:

[(1, 18219568), (2, 9109784), (4, 4554892), (8, 2277446), (16, 1138723), (31, 587728), (62, 293864), (109, 167152), (124, 146932), (218, 83576), (248, 73466), (337, 54064), (436, 41788), (496, 36733), (674, 27032), (872, 20894), (1348, 13516), (1744, 10447), (2696, 6758), (3379, 5392)]