21463676

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31751}}^1$

素因数の和:31781

約数の個数: 18

約数和(自身を含む): 40674312

約数和(自身を除く): 19210636

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31751, 63502, 127004, 412763, 825526, 1651052, 5365919, 10731838, 21463676]

約数ペア:

[(1, 21463676), (2, 10731838), (4, 5365919), (13, 1651052), (26, 825526), (52, 412763), (169, 127004), (338, 63502), (676, 31751)]