165161875

素因数分解:

$5^4\times {\mathrm{401}}^1\times {\mathrm{659}}^1$

素因数の和:1080

約数の個数: 20

約数和(自身を含む): 207214920

約数和(自身を除く): 42053045

約数列:

[1, 5, 25, 125, 401, 625, 659, 2005, 3295, 10025, 16475, 50125, 82375, 250625, 264259, 411875, 1321295, 6606475, 33032375, 165161875]

約数ペア:

[(1, 165161875), (5, 33032375), (25, 6606475), (125, 1321295), (401, 411875), (625, 264259), (659, 250625), (2005, 82375), (3295, 50125), (10025, 16475)]