20391915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59107}}^1$

素因数の和:59138

約数の個数: 16

約数和(自身を含む): 34046208

約数和(自身を除く): 13654293

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 59107, 177321, 295535, 886605, 1359461, 4078383, 6797305, 20391915]

約数ペア:

[(1, 20391915), (3, 6797305), (5, 4078383), (15, 1359461), (23, 886605), (69, 295535), (115, 177321), (345, 59107)]