21167728

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{593}}^1$

素因数の和:721

約数の個数: 40

約数和(自身を含む): 43309728

約数和(自身を除く): 22142000

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 97, 184, 194, 368, 388, 593, 776, 1186, 1552, 2231, 2372, 4462, 4744, 8924, 9488, 13639, 17848, 27278, 35696, 54556, 57521, 109112, 115042, 218224, 230084, 460168, 920336, 1322983, 2645966, 5291932, 10583864, 21167728]

約数ペア:

[(1, 21167728), (2, 10583864), (4, 5291932), (8, 2645966), (16, 1322983), (23, 920336), (46, 460168), (92, 230084), (97, 218224), (184, 115042), (194, 109112), (368, 57521), (388, 54556), (593, 35696), (776, 27278), (1186, 17848), (1552, 13639), (2231, 9488), (2372, 8924), (4462, 4744)]