90771640

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{9041}}^1$

素因数の和:9303

約数の個数: 32

約数和(自身を含む): 205072560

約数和(自身を除く): 114300920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 9041, 10040, 18082, 36164, 45205, 72328, 90410, 180820, 361640, 2269291, 4538582, 9077164, 11346455, 18154328, 22692910, 45385820, 90771640]

約数ペア:

[(1, 90771640), (2, 45385820), (4, 22692910), (5, 18154328), (8, 11346455), (10, 9077164), (20, 4538582), (40, 2269291), (251, 361640), (502, 180820), (1004, 90410), (1255, 72328), (2008, 45205), (2510, 36164), (5020, 18082), (9041, 10040)]