10980820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 24192000

約数和(自身を除く): 13211180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 199, 310, 356, 398, 445, 620, 796, 890, 995, 1780, 1990, 2759, 3980, 5518, 6169, 11036, 12338, 13795, 17711, 24676, 27590, 30845, 35422, 55180, 61690, 70844, 88555, 123380, 177110, 354220, 549041, 1098082, 2196164, 2745205, 5490410, 10980820]

約数ペア:

[(1, 10980820), (2, 5490410), (4, 2745205), (5, 2196164), (10, 1098082), (20, 549041), (31, 354220), (62, 177110), (89, 123380), (124, 88555), (155, 70844), (178, 61690), (199, 55180), (310, 35422), (356, 30845), (398, 27590), (445, 24676), (620, 17711), (796, 13795), (890, 12338), (995, 11036), (1780, 6169), (1990, 5518), (2759, 3980)]