20837325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 37229760

約数和(自身を除く): 16392435

約数列:

[1, 3, 5, 15, 17, 25, 51, 59, 75, 85, 177, 255, 277, 295, 425, 831, 885, 1003, 1275, 1385, 1475, 3009, 4155, 4425, 4709, 5015, 6925, 14127, 15045, 16343, 20775, 23545, 25075, 49029, 70635, 75225, 81715, 117725, 245145, 277831, 353175, 408575, 833493, 1225725, 1389155, 4167465, 6945775, 20837325]

約数ペア:

[(1, 20837325), (3, 6945775), (5, 4167465), (15, 1389155), (17, 1225725), (25, 833493), (51, 408575), (59, 353175), (75, 277831), (85, 245145), (177, 117725), (255, 81715), (277, 75225), (295, 70635), (425, 49029), (831, 25075), (885, 23545), (1003, 20775), (1275, 16343), (1385, 15045), (1475, 14127), (3009, 6925), (4155, 5015), (4425, 4709)]