21553370

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{277}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 40352256

約数和(自身を除く): 18798886

約数列:

[1, 2, 5, 10, 31, 62, 155, 251, 277, 310, 502, 554, 1255, 1385, 2510, 2770, 7781, 8587, 15562, 17174, 38905, 42935, 69527, 77810, 85870, 139054, 347635, 695270, 2155337, 4310674, 10776685, 21553370]

約数ペア:

[(1, 21553370), (2, 10776685), (5, 4310674), (10, 2155337), (31, 695270), (62, 347635), (155, 139054), (251, 85870), (277, 77810), (310, 69527), (502, 42935), (554, 38905), (1255, 17174), (1385, 15562), (2510, 8587), (2770, 7781)]