21209162

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:638

約数の個数: 24

約数和(自身を含む): 34784640

約数和(自身を除く): 13575478

約数列:

[1, 2, 13, 26, 131, 169, 262, 338, 479, 958, 1703, 3406, 6227, 12454, 22139, 44278, 62749, 80951, 125498, 161902, 815737, 1631474, 10604581, 21209162]

約数ペア:

[(1, 21209162), (2, 10604581), (13, 1631474), (26, 815737), (131, 161902), (169, 125498), (262, 80951), (338, 62749), (479, 44278), (958, 22139), (1703, 12454), (3406, 6227)]