19718262

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 26246538

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 71, 74, 111, 139, 142, 213, 222, 278, 333, 417, 426, 639, 666, 834, 999, 1251, 1278, 1917, 1998, 2502, 2627, 3753, 3834, 5143, 5254, 7506, 7881, 9869, 10286, 15429, 15762, 19738, 23643, 29607, 30858, 46287, 47286, 59214, 70929, 88821, 92574, 138861, 141858, 177642, 266463, 277722, 365153, 532926, 730306, 1095459, 2190918, 3286377, 6572754, 9859131, 19718262]

約数ペア:

[(1, 19718262), (2, 9859131), (3, 6572754), (6, 3286377), (9, 2190918), (18, 1095459), (27, 730306), (37, 532926), (54, 365153), (71, 277722), (74, 266463), (111, 177642), (139, 141858), (142, 138861), (213, 92574), (222, 88821), (278, 70929), (333, 59214), (417, 47286), (426, 46287), (639, 30858), (666, 29607), (834, 23643), (999, 19738), (1251, 15762), (1278, 15429), (1917, 10286), (1998, 9869), (2502, 7881), (2627, 7506), (3753, 5254), (3834, 5143)]