218989939

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:355

約数の個数: 32

約数和(自身を含む): 265982976

約数和(自身を除く): 46993037

約数列:

[1, 7, 37, 61, 83, 167, 259, 427, 581, 1169, 2257, 3071, 5063, 6179, 10187, 13861, 15799, 21497, 35441, 43253, 71309, 97027, 187331, 376919, 512857, 845521, 1311317, 2638433, 3589999, 5918647, 31284277, 218989939]

約数ペア:

[(1, 218989939), (7, 31284277), (37, 5918647), (61, 3589999), (83, 2638433), (167, 1311317), (259, 845521), (427, 512857), (581, 376919), (1169, 187331), (2257, 97027), (3071, 71309), (5063, 43253), (6179, 35441), (10187, 21497), (13861, 15799)]