17641960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9001}}^1$

素因数の和:9026

約数の個数: 48

約数和(自身を含む): 46180260

約数和(自身を除く): 28538300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9001, 18002, 36004, 45005, 63007, 72008, 90010, 126014, 180020, 252028, 315035, 360040, 441049, 504056, 630070, 882098, 1260140, 1764196, 2205245, 2520280, 3528392, 4410490, 8820980, 17641960]

約数ペア:

[(1, 17641960), (2, 8820980), (4, 4410490), (5, 3528392), (7, 2520280), (8, 2205245), (10, 1764196), (14, 1260140), (20, 882098), (28, 630070), (35, 504056), (40, 441049), (49, 360040), (56, 315035), (70, 252028), (98, 180020), (140, 126014), (196, 90010), (245, 72008), (280, 63007), (392, 45005), (490, 36004), (980, 18002), (1960, 9001)]