18601972

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:200

約数の個数: 36

約数和(自身を含む): 34668480

約数和(自身を除く): 16066508

約数列:

[1, 2, 4, 37, 43, 74, 79, 86, 148, 158, 172, 316, 1369, 1591, 2738, 2923, 3182, 3397, 5476, 5846, 6364, 6794, 11692, 13588, 58867, 108151, 117734, 125689, 216302, 235468, 251378, 432604, 502756, 4650493, 9300986, 18601972]

約数ペア:

[(1, 18601972), (2, 9300986), (4, 4650493), (37, 502756), (43, 432604), (74, 251378), (79, 235468), (86, 216302), (148, 125689), (158, 117734), (172, 108151), (316, 58867), (1369, 13588), (1591, 11692), (2738, 6794), (2923, 6364), (3182, 5846), (3397, 5476)]