19707475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{431}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 25712640

約数和(自身を除く): 6005165

約数列:

[1, 5, 25, 31, 59, 155, 295, 431, 775, 1475, 1829, 2155, 9145, 10775, 13361, 25429, 45725, 66805, 127145, 334025, 635725, 788299, 3941495, 19707475]

約数ペア:

[(1, 19707475), (5, 3941495), (25, 788299), (31, 635725), (59, 334025), (155, 127145), (295, 66805), (431, 45725), (775, 25429), (1475, 13361), (1829, 10775), (2155, 9145)]