20491455

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 33707520

約数和(自身を除く): 13216065

約数列:

[1, 3, 5, 15, 83, 109, 151, 249, 327, 415, 453, 545, 755, 1245, 1635, 2265, 9047, 12533, 16459, 27141, 37599, 45235, 49377, 62665, 82295, 135705, 187995, 246885, 1366097, 4098291, 6830485, 20491455]

約数ペア:

[(1, 20491455), (3, 6830485), (5, 4098291), (15, 1366097), (83, 246885), (109, 187995), (151, 135705), (249, 82295), (327, 62665), (415, 49377), (453, 45235), (545, 37599), (755, 27141), (1245, 16459), (1635, 12533), (2265, 9047)]