19898565

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{421}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 33543936

約数和(自身を除く): 13645371

約数列:

[1, 3, 5, 15, 23, 69, 115, 137, 345, 411, 421, 685, 1263, 2055, 2105, 3151, 6315, 9453, 9683, 15755, 29049, 47265, 48415, 57677, 145245, 173031, 288385, 865155, 1326571, 3979713, 6632855, 19898565]

約数ペア:

[(1, 19898565), (3, 6632855), (5, 3979713), (15, 1326571), (23, 865155), (69, 288385), (115, 173031), (137, 145245), (345, 57677), (411, 48415), (421, 47265), (685, 29049), (1263, 15755), (2055, 9683), (2105, 9453), (3151, 6315)]