21377109

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1697}}^1$

素因数の和:1749

約数の個数: 32

約数和(自身を含む): 34231680

約数和(自身を除く): 12854571

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 221, 247, 323, 663, 741, 969, 1697, 4199, 5091, 12597, 22061, 28849, 32243, 66183, 86547, 96729, 375037, 419159, 548131, 1125111, 1257477, 1644393, 7125703, 21377109]

約数ペア:

[(1, 21377109), (3, 7125703), (13, 1644393), (17, 1257477), (19, 1125111), (39, 548131), (51, 419159), (57, 375037), (221, 96729), (247, 86547), (323, 66183), (663, 32243), (741, 28849), (969, 22061), (1697, 12597), (4199, 5091)]