19653985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{3643}}^1$

素因数の和:3744

約数の個数: 16

約数和(自身を含む): 25712064

約数和(自身を除く): 6058079

約数列:

[1, 5, 13, 65, 83, 415, 1079, 3643, 5395, 18215, 47359, 236795, 302369, 1511845, 3930797, 19653985]

約数ペア:

[(1, 19653985), (5, 3930797), (13, 1511845), (65, 302369), (83, 236795), (415, 47359), (1079, 18215), (3643, 5395)]