66931220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{349}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 144883200

約数和(自身を除く): 77951980

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 223, 349, 430, 446, 698, 860, 892, 1115, 1396, 1745, 2230, 3490, 4460, 6980, 9589, 15007, 19178, 30014, 38356, 47945, 60028, 75035, 77827, 95890, 150070, 155654, 191780, 300140, 311308, 389135, 778270, 1556540, 3346561, 6693122, 13386244, 16732805, 33465610, 66931220]

約数ペア:

[(1, 66931220), (2, 33465610), (4, 16732805), (5, 13386244), (10, 6693122), (20, 3346561), (43, 1556540), (86, 778270), (172, 389135), (215, 311308), (223, 300140), (349, 191780), (430, 155654), (446, 150070), (698, 95890), (860, 77827), (892, 75035), (1115, 60028), (1396, 47945), (1745, 38356), (2230, 30014), (3490, 19178), (4460, 15007), (6980, 9589)]