20287817

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 32

約数和(自身を含む): 25194240

約数和(自身を除く): 4906423

約数列:

[1, 11, 17, 23, 53, 89, 187, 253, 391, 583, 901, 979, 1219, 1513, 2047, 4301, 4717, 9911, 13409, 16643, 20723, 22517, 34799, 51887, 80189, 108491, 227953, 382789, 882079, 1193401, 1844347, 20287817]

約数ペア:

[(1, 20287817), (11, 1844347), (17, 1193401), (23, 882079), (53, 382789), (89, 227953), (187, 108491), (253, 80189), (391, 51887), (583, 34799), (901, 22517), (979, 20723), (1219, 16643), (1513, 13409), (2047, 9911), (4301, 4717)]