21141208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 45745920

約数和(自身を除く): 24604712

約数列:

[1, 2, 4, 8, 11, 22, 37, 43, 44, 74, 86, 88, 148, 151, 172, 296, 302, 344, 407, 473, 604, 814, 946, 1208, 1591, 1628, 1661, 1892, 3182, 3256, 3322, 3784, 5587, 6364, 6493, 6644, 11174, 12728, 12986, 13288, 17501, 22348, 25972, 35002, 44696, 51944, 61457, 70004, 71423, 122914, 140008, 142846, 240241, 245828, 285692, 480482, 491656, 571384, 960964, 1921928, 2642651, 5285302, 10570604, 21141208]

約数ペア:

[(1, 21141208), (2, 10570604), (4, 5285302), (8, 2642651), (11, 1921928), (22, 960964), (37, 571384), (43, 491656), (44, 480482), (74, 285692), (86, 245828), (88, 240241), (148, 142846), (151, 140008), (172, 122914), (296, 71423), (302, 70004), (344, 61457), (407, 51944), (473, 44696), (604, 35002), (814, 25972), (946, 22348), (1208, 17501), (1591, 13288), (1628, 12986), (1661, 12728), (1892, 11174), (3182, 6644), (3256, 6493), (3322, 6364), (3784, 5587)]