20740905

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12457}}^1$

素因数の和:12505

約数の個数: 24

約数和(自身を含む): 36925512

約数和(自身を除く): 16184607

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12457, 37371, 62285, 112113, 186855, 460909, 560565, 1382727, 2304545, 4148181, 6913635, 20740905]

約数ペア:

[(1, 20740905), (3, 6913635), (5, 4148181), (9, 2304545), (15, 1382727), (37, 560565), (45, 460909), (111, 186855), (185, 112113), (333, 62285), (555, 37371), (1665, 12457)]