19985985

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5351}}^1$

素因数の和:5445

約数の個数: 24

約数和(自身を含む): 35066304

約数和(自身を除く): 15080319

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 5351, 16053, 26755, 48159, 80265, 240795, 444133, 1332399, 2220665, 3997197, 6661995, 19985985]

約数ペア:

[(1, 19985985), (3, 6661995), (5, 3997197), (9, 2220665), (15, 1332399), (45, 444133), (83, 240795), (249, 80265), (415, 48159), (747, 26755), (1245, 16053), (3735, 5351)]