18988245

素因数分解:

$3^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{829}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 33017400

約数和(自身を除く): 14029155

約数列:

[1, 3, 5, 9, 15, 45, 509, 829, 1527, 2487, 2545, 4145, 4581, 7461, 7635, 12435, 22905, 37305, 421961, 1265883, 2109805, 3797649, 6329415, 18988245]

約数ペア:

[(1, 18988245), (3, 6329415), (5, 3797649), (9, 2109805), (15, 1265883), (45, 421961), (509, 37305), (829, 22905), (1527, 12435), (2487, 7635), (2545, 7461), (4145, 4581)]