19661785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 28086912

約数和(自身を除く): 8425127

約数列:

[1, 5, 11, 13, 55, 65, 107, 143, 257, 535, 715, 1177, 1285, 1391, 2827, 3341, 5885, 6955, 14135, 15301, 16705, 27499, 36751, 76505, 137495, 183755, 302489, 357487, 1512445, 1787435, 3932357, 19661785]

約数ペア:

[(1, 19661785), (5, 3932357), (11, 1787435), (13, 1512445), (55, 357487), (65, 302489), (107, 183755), (143, 137495), (257, 76505), (535, 36751), (715, 27499), (1177, 16705), (1285, 15301), (1391, 14135), (2827, 6955), (3341, 5885)]