20219719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{383}}^1$

素因数の和:558

約数の個数: 16

約数和(自身を含む): 22708224

約数和(自身を除く): 2488505

約数列:

[1, 13, 31, 131, 383, 403, 1703, 4061, 4979, 11873, 50173, 52793, 154349, 652249, 1555363, 20219719]

約数ペア:

[(1, 20219719), (13, 1555363), (31, 652249), (131, 154349), (383, 52793), (403, 50173), (1703, 11873), (4061, 4979)]