18880425

素因数分解:

$3^3\times 5^2\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 35206080

約数和(自身を除く): 16325655

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 83, 135, 225, 249, 337, 415, 675, 747, 1011, 1245, 1685, 2075, 2241, 3033, 3735, 5055, 6225, 8425, 9099, 11205, 15165, 18675, 25275, 27971, 45495, 56025, 75825, 83913, 139855, 227475, 251739, 419565, 699275, 755217, 1258695, 2097825, 3776085, 6293475, 18880425]

約数ペア:

[(1, 18880425), (3, 6293475), (5, 3776085), (9, 2097825), (15, 1258695), (25, 755217), (27, 699275), (45, 419565), (75, 251739), (83, 227475), (135, 139855), (225, 83913), (249, 75825), (337, 56025), (415, 45495), (675, 27971), (747, 25275), (1011, 18675), (1245, 15165), (1685, 11205), (2075, 9099), (2241, 8425), (3033, 6225), (3735, 5055)]