21434739

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2677}}^1$

素因数の和:2854

約数の個数: 16

約数和(自身を含む): 30464928

約数和(自身を除く): 9030189

約数列:

[1, 3, 17, 51, 157, 471, 2669, 2677, 8007, 8031, 45509, 136527, 420289, 1260867, 7144913, 21434739]

約数ペア:

[(1, 21434739), (3, 7144913), (17, 1260867), (51, 420289), (157, 136527), (471, 45509), (2669, 8031), (2677, 8007)]