18208995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 35312640

約数和(自身を除く): 17103645

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 43, 105, 109, 111, 129, 185, 215, 259, 301, 327, 545, 555, 645, 763, 777, 903, 1295, 1505, 1591, 1635, 2289, 3815, 3885, 4033, 4515, 4687, 4773, 7955, 11137, 11445, 12099, 14061, 20165, 23435, 23865, 28231, 32809, 33411, 55685, 60495, 70305, 84693, 98427, 141155, 164045, 167055, 173419, 423465, 492135, 520257, 867095, 1213933, 2601285, 3641799, 6069665, 18208995]

約数ペア:

[(1, 18208995), (3, 6069665), (5, 3641799), (7, 2601285), (15, 1213933), (21, 867095), (35, 520257), (37, 492135), (43, 423465), (105, 173419), (109, 167055), (111, 164045), (129, 141155), (185, 98427), (215, 84693), (259, 70305), (301, 60495), (327, 55685), (545, 33411), (555, 32809), (645, 28231), (763, 23865), (777, 23435), (903, 20165), (1295, 14061), (1505, 12099), (1591, 11445), (1635, 11137), (2289, 7955), (3815, 4773), (3885, 4687), (4033, 4515)]