19989424

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13729}}^1$

素因数の和:13757

約数の個数: 40

約数和(自身を含む): 47670560

約数和(自身を除く): 27681136

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13729, 27458, 54916, 96103, 109832, 178477, 192206, 219664, 356954, 384412, 713908, 768824, 1249339, 1427816, 1537648, 2498678, 2855632, 4997356, 9994712, 19989424]

約数ペア:

[(1, 19989424), (2, 9994712), (4, 4997356), (7, 2855632), (8, 2498678), (13, 1537648), (14, 1427816), (16, 1249339), (26, 768824), (28, 713908), (52, 384412), (56, 356954), (91, 219664), (104, 192206), (112, 178477), (182, 109832), (208, 96103), (364, 54916), (728, 27458), (1456, 13729)]