3138140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 6985440

約数和(自身を除く): 3847300

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 89, 164, 172, 178, 205, 215, 356, 410, 430, 445, 820, 860, 890, 1763, 1780, 3526, 3649, 3827, 7052, 7298, 7654, 8815, 14596, 15308, 17630, 18245, 19135, 35260, 36490, 38270, 72980, 76540, 156907, 313814, 627628, 784535, 1569070, 3138140]

約数ペア:

[(1, 3138140), (2, 1569070), (4, 784535), (5, 627628), (10, 313814), (20, 156907), (41, 76540), (43, 72980), (82, 38270), (86, 36490), (89, 35260), (164, 19135), (172, 18245), (178, 17630), (205, 15308), (215, 14596), (356, 8815), (410, 7654), (430, 7298), (445, 7052), (820, 3827), (860, 3649), (890, 3526), (1763, 1780)]