20878078

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 34927200

約数和(自身を除く): 14049122

約数列:

[1, 2, 13, 26, 53, 106, 109, 139, 218, 278, 689, 1378, 1417, 1807, 2834, 3614, 5777, 7367, 11554, 14734, 15151, 30302, 75101, 95771, 150202, 191542, 196963, 393926, 803003, 1606006, 10439039, 20878078]

約数ペア:

[(1, 20878078), (2, 10439039), (13, 1606006), (26, 803003), (53, 393926), (106, 196963), (109, 191542), (139, 150202), (218, 95771), (278, 75101), (689, 30302), (1378, 15151), (1417, 14734), (1807, 11554), (2834, 7367), (3614, 5777)]