19987460

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43451}}^1$

素因数の和:43483

約数の個数: 24

約数和(自身を含む): 43799616

約数和(自身を除く): 23812156

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43451, 86902, 173804, 217255, 434510, 869020, 999373, 1998746, 3997492, 4996865, 9993730, 19987460]

約数ペア:

[(1, 19987460), (2, 9993730), (4, 4996865), (5, 3997492), (10, 1998746), (20, 999373), (23, 869020), (46, 434510), (92, 217255), (115, 173804), (230, 86902), (460, 43451)]