81416960

素因数分解:

$2^8\times 5^1\times {\mathrm{63607}}^1$

素因数の和:63628

約数の個数: 36

約数和(自身を含む): 195022128

約数和(自身を除く): 113605168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63607, 127214, 254428, 318035, 508856, 636070, 1017712, 1272140, 2035424, 2544280, 4070848, 5088560, 8141696, 10177120, 16283392, 20354240, 40708480, 81416960]

約数ペア:

[(1, 81416960), (2, 40708480), (4, 20354240), (5, 16283392), (8, 10177120), (10, 8141696), (16, 5088560), (20, 4070848), (32, 2544280), (40, 2035424), (64, 1272140), (80, 1017712), (128, 636070), (160, 508856), (256, 318035), (320, 254428), (640, 127214), (1280, 63607)]