161557720

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{27107}}^1$

素因数の和:27267

約数の個数: 32

約数和(自身を含む): 365958000

約数和(自身を除く): 204400280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 27107, 54214, 108428, 135535, 216856, 271070, 542140, 1084280, 4038943, 8077886, 16155772, 20194715, 32311544, 40389430, 80778860, 161557720]

約数ペア:

[(1, 161557720), (2, 80778860), (4, 40389430), (5, 32311544), (8, 20194715), (10, 16155772), (20, 8077886), (40, 4038943), (149, 1084280), (298, 542140), (596, 271070), (745, 216856), (1192, 135535), (1490, 108428), (2980, 54214), (5960, 27107)]