668801505

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{20021}}^1$

素因数の和:20177

約数の個数: 32

約数和(自身を含む): 1141734528

約数和(自身を除く): 472933023

約数列:

[1, 3, 5, 15, 17, 51, 85, 131, 255, 393, 655, 1965, 2227, 6681, 11135, 20021, 33405, 60063, 100105, 300315, 340357, 1021071, 1701785, 2622751, 5105355, 7868253, 13113755, 39341265, 44586767, 133760301, 222933835, 668801505]

約数ペア:

[(1, 668801505), (3, 222933835), (5, 133760301), (15, 44586767), (17, 39341265), (51, 13113755), (85, 7868253), (131, 5105355), (255, 2622751), (393, 1701785), (655, 1021071), (1965, 340357), (2227, 300315), (6681, 100105), (11135, 60063), (20021, 33405)]