128405985

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{120569}}^1$

素因数の和:120648

約数の個数: 16

約数和(自身を含む): 208344960

約数和(自身を除く): 79938975

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 120569, 361707, 602845, 1808535, 8560399, 25681197, 42801995, 128405985]

約数ペア:

[(1, 128405985), (3, 42801995), (5, 25681197), (15, 8560399), (71, 1808535), (213, 602845), (355, 361707), (1065, 120569)]