320919440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{129403}}^1$

素因数の和:129447

約数の個数: 40

約数和(自身を含む): 770212608

約数和(自身を除く): 449293168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 129403, 258806, 517612, 647015, 1035224, 1294030, 2070448, 2588060, 4011493, 5176120, 8022986, 10352240, 16045972, 20057465, 32091944, 40114930, 64183888, 80229860, 160459720, 320919440]

約数ペア:

[(1, 320919440), (2, 160459720), (4, 80229860), (5, 64183888), (8, 40114930), (10, 32091944), (16, 20057465), (20, 16045972), (31, 10352240), (40, 8022986), (62, 5176120), (80, 4011493), (124, 2588060), (155, 2070448), (248, 1294030), (310, 1035224), (496, 647015), (620, 517612), (1240, 258806), (2480, 129403)]