21139430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{162611}}^1$

素因数の和:162631

約数の個数: 16

約数和(自身を含む): 40978224

約数和(自身を除く): 19838794

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 162611, 325222, 813055, 1626110, 2113943, 4227886, 10569715, 21139430]

約数ペア:

[(1, 21139430), (2, 10569715), (5, 4227886), (10, 2113943), (13, 1626110), (26, 813055), (65, 325222), (130, 162611)]