18909814

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 38817792

約数和(自身を除く): 19907978

約数列:

[1, 2, 7, 11, 14, 17, 22, 31, 34, 62, 77, 119, 154, 187, 217, 233, 238, 341, 374, 434, 466, 527, 682, 1054, 1309, 1631, 2387, 2563, 2618, 3262, 3689, 3961, 4774, 5126, 5797, 7223, 7378, 7922, 11594, 14446, 17941, 27727, 35882, 40579, 43571, 50561, 55454, 79453, 81158, 87142, 101122, 122791, 158906, 245582, 304997, 556171, 609994, 859537, 1112342, 1350701, 1719074, 2701402, 9454907, 18909814]

約数ペア:

[(1, 18909814), (2, 9454907), (7, 2701402), (11, 1719074), (14, 1350701), (17, 1112342), (22, 859537), (31, 609994), (34, 556171), (62, 304997), (77, 245582), (119, 158906), (154, 122791), (187, 101122), (217, 87142), (233, 81158), (238, 79453), (341, 55454), (374, 50561), (434, 43571), (466, 40579), (527, 35882), (682, 27727), (1054, 17941), (1309, 14446), (1631, 11594), (2387, 7922), (2563, 7378), (2618, 7223), (3262, 5797), (3689, 5126), (3961, 4774)]