177855820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1\times {\mathrm{613}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 380630880

約数和(自身を除く): 202775060

約数列:

[1, 2, 4, 5, 10, 20, 89, 163, 178, 326, 356, 445, 613, 652, 815, 890, 1226, 1630, 1780, 2452, 3065, 3260, 6130, 12260, 14507, 29014, 54557, 58028, 72535, 99919, 109114, 145070, 199838, 218228, 272785, 290140, 399676, 499595, 545570, 999190, 1091140, 1998380, 8892791, 17785582, 35571164, 44463955, 88927910, 177855820]

約数ペア:

[(1, 177855820), (2, 88927910), (4, 44463955), (5, 35571164), (10, 17785582), (20, 8892791), (89, 1998380), (163, 1091140), (178, 999190), (326, 545570), (356, 499595), (445, 399676), (613, 290140), (652, 272785), (815, 218228), (890, 199838), (1226, 145070), (1630, 109114), (1780, 99919), (2452, 72535), (3065, 58028), (3260, 54557), (6130, 29014), (12260, 14507)]