21685311

素因数分解:

$3^2\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 32042400

約数和(自身を除く): 10357089

約数列:

[1, 3, 9, 103, 149, 157, 309, 447, 471, 927, 1341, 1413, 15347, 16171, 23393, 46041, 48513, 70179, 138123, 145539, 210537, 2409479, 7228437, 21685311]

約数ペア:

[(1, 21685311), (3, 7228437), (9, 2409479), (103, 210537), (149, 145539), (157, 138123), (309, 70179), (447, 48513), (471, 46041), (927, 23393), (1341, 16171), (1413, 15347)]