190038140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1\times {\mathrm{443}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 406153440

約数和(自身を除く): 216115300

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 241, 356, 443, 445, 482, 886, 890, 964, 1205, 1772, 1780, 2215, 2410, 4430, 4820, 8860, 21449, 39427, 42898, 78854, 85796, 106763, 107245, 157708, 197135, 213526, 214490, 394270, 427052, 428980, 533815, 788540, 1067630, 2135260, 9501907, 19003814, 38007628, 47509535, 95019070, 190038140]

約数ペア:

[(1, 190038140), (2, 95019070), (4, 47509535), (5, 38007628), (10, 19003814), (20, 9501907), (89, 2135260), (178, 1067630), (241, 788540), (356, 533815), (443, 428980), (445, 427052), (482, 394270), (886, 214490), (890, 213526), (964, 197135), (1205, 157708), (1772, 107245), (1780, 106763), (2215, 85796), (2410, 78854), (4430, 42898), (4820, 39427), (8860, 21449)]