21781096

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1237}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 42785280

約数和(自身を除く): 21004184

約数列:

[1, 2, 4, 8, 31, 62, 71, 124, 142, 248, 284, 568, 1237, 2201, 2474, 4402, 4948, 8804, 9896, 17608, 38347, 76694, 87827, 153388, 175654, 306776, 351308, 702616, 2722637, 5445274, 10890548, 21781096]

約数ペア:

[(1, 21781096), (2, 10890548), (4, 5445274), (8, 2722637), (31, 702616), (62, 351308), (71, 306776), (124, 175654), (142, 153388), (248, 87827), (284, 76694), (568, 38347), (1237, 17608), (2201, 9896), (2474, 8804), (4402, 4948)]