16657940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:912

約数の個数: 48

約数和(自身を含む): 38196480

約数和(自身を除く): 21538540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 811, 1027, 1580, 1622, 2054, 3244, 4055, 4108, 5135, 8110, 10270, 10543, 16220, 20540, 21086, 42172, 52715, 64069, 105430, 128138, 210860, 256276, 320345, 640690, 832897, 1281380, 1665794, 3331588, 4164485, 8328970, 16657940]

約数ペア:

[(1, 16657940), (2, 8328970), (4, 4164485), (5, 3331588), (10, 1665794), (13, 1281380), (20, 832897), (26, 640690), (52, 320345), (65, 256276), (79, 210860), (130, 128138), (158, 105430), (260, 64069), (316, 52715), (395, 42172), (790, 21086), (811, 20540), (1027, 16220), (1580, 10543), (1622, 10270), (2054, 8110), (3244, 5135), (4055, 4108)]