21012556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1831}}^1$

素因数の和:2005

約数の個数: 24

約数和(自身を含む): 38984960

約数和(自身を除く): 17972404

約数列:

[1, 2, 4, 19, 38, 76, 151, 302, 604, 1831, 2869, 3662, 5738, 7324, 11476, 34789, 69578, 139156, 276481, 552962, 1105924, 5253139, 10506278, 21012556]

約数ペア:

[(1, 21012556), (2, 10506278), (4, 5253139), (19, 1105924), (38, 552962), (76, 276481), (151, 139156), (302, 69578), (604, 34789), (1831, 11476), (2869, 7324), (3662, 5738)]