20559830

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19961}}^1$

素因数の和:20071

約数の個数: 16

約数和(自身を含む): 37368864

約数和(自身を除く): 16809034

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19961, 39922, 99805, 199610, 2055983, 4111966, 10279915, 20559830]

約数ペア:

[(1, 20559830), (2, 10279915), (5, 4111966), (10, 2055983), (103, 199610), (206, 99805), (515, 39922), (1030, 19961)]