21106826

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^2$

素因数の和:155

約数の個数: 36

約数和(自身を含む): 36915522

約数和(自身を除く): 15808696

約数列:

[1, 2, 13, 17, 26, 34, 53, 106, 221, 289, 442, 578, 689, 901, 1378, 1802, 2809, 3757, 5618, 7514, 11713, 15317, 23426, 30634, 36517, 47753, 73034, 95506, 199121, 398242, 620789, 811801, 1241578, 1623602, 10553413, 21106826]

約数ペア:

[(1, 21106826), (2, 10553413), (13, 1623602), (17, 1241578), (26, 811801), (34, 620789), (53, 398242), (106, 199121), (221, 95506), (289, 73034), (442, 47753), (578, 36517), (689, 30634), (901, 23426), (1378, 15317), (1802, 11713), (2809, 7514), (3757, 5618)]