19904263

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 21980160

約数和(自身を除く): 2075897

約数列:

[1, 17, 31, 179, 211, 527, 3043, 3587, 5549, 6541, 37769, 94333, 111197, 642073, 1170839, 19904263]

約数ペア:

[(1, 19904263), (17, 1170839), (31, 642073), (179, 111197), (211, 94333), (527, 37769), (3043, 6541), (3587, 5549)]