21174503

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2917}}^1$

素因数の和:3002

約数の個数: 16

約数和(自身を含む): 26051904

約数和(自身を除く): 4877401

約数列:

[1, 7, 17, 61, 119, 427, 1037, 2917, 7259, 20419, 49589, 177937, 347123, 1245559, 3024929, 21174503]

約数ペア:

[(1, 21174503), (7, 3024929), (17, 1245559), (61, 347123), (119, 177937), (427, 49589), (1037, 20419), (2917, 7259)]