68620780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2029}}^1$

素因数の和:2146

約数の個数: 48

約数和(自身を含む): 153468000

約数和(自身を除く): 84847220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 890, 1691, 1780, 2029, 3382, 4058, 6764, 8116, 8455, 10145, 16910, 20290, 33820, 38551, 40580, 77102, 154204, 180581, 192755, 361162, 385510, 722324, 771020, 902905, 1805810, 3431039, 3611620, 6862078, 13724156, 17155195, 34310390, 68620780]

約数ペア:

[(1, 68620780), (2, 34310390), (4, 17155195), (5, 13724156), (10, 6862078), (19, 3611620), (20, 3431039), (38, 1805810), (76, 902905), (89, 771020), (95, 722324), (178, 385510), (190, 361162), (356, 192755), (380, 180581), (445, 154204), (890, 77102), (1691, 40580), (1780, 38551), (2029, 33820), (3382, 20290), (4058, 16910), (6764, 10145), (8116, 8455)]