81845120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{18269}}^1$

素因数の和:18295

約数の個数: 64

約数和(自身を含む): 223624800

約数和(自身を除く): 141779680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 18269, 36538, 73076, 91345, 127883, 146152, 182690, 255766, 292304, 365380, 511532, 584608, 639415, 730760, 1023064, 1169216, 1278830, 1461520, 2046128, 2338432, 2557660, 2923040, 4092256, 5115320, 5846080, 8184512, 10230640, 11692160, 16369024, 20461280, 40922560, 81845120]

約数ペア:

[(1, 81845120), (2, 40922560), (4, 20461280), (5, 16369024), (7, 11692160), (8, 10230640), (10, 8184512), (14, 5846080), (16, 5115320), (20, 4092256), (28, 2923040), (32, 2557660), (35, 2338432), (40, 2046128), (56, 1461520), (64, 1278830), (70, 1169216), (80, 1023064), (112, 730760), (128, 639415), (140, 584608), (160, 511532), (224, 365380), (280, 292304), (320, 255766), (448, 182690), (560, 146152), (640, 127883), (896, 91345), (1120, 73076), (2240, 36538), (4480, 18269)]