21000888040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47729291}}^1$

素因数の和:47729313

約数の個数: 32

約数和(自身を含む): 51547635360

約数和(自身を除く): 30546747320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47729291, 95458582, 190917164, 238646455, 381834328, 477292910, 525022201, 954585820, 1050044402, 1909171640, 2100088804, 2625111005, 4200177608, 5250222010, 10500444020, 21000888040]

約数ペア:

[(1, 21000888040), (2, 10500444020), (4, 5250222010), (5, 4200177608), (8, 2625111005), (10, 2100088804), (11, 1909171640), (20, 1050044402), (22, 954585820), (40, 525022201), (44, 477292910), (55, 381834328), (88, 238646455), (110, 190917164), (220, 95458582), (440, 47729291)]