21428878

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{3719}}^1$

素因数の和:3831

約数の個数: 16

約数和(自身を含む): 33390720

約数和(自身を除く): 11961842

約数列:

[1, 2, 43, 67, 86, 134, 2881, 3719, 5762, 7438, 159917, 249173, 319834, 498346, 10714439, 21428878]

約数ペア:

[(1, 21428878), (2, 10714439), (43, 498346), (67, 319834), (86, 249173), (134, 159917), (2881, 7438), (3719, 5762)]