20356905

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{823}}^1$

素因数の和:945

約数の個数: 32

約数和(自身を含む): 34884864

約数和(自身を除く): 14527959

約数列:

[1, 3, 5, 15, 17, 51, 85, 97, 255, 291, 485, 823, 1455, 1649, 2469, 4115, 4947, 8245, 12345, 13991, 24735, 41973, 69955, 79831, 209865, 239493, 399155, 1197465, 1357127, 4071381, 6785635, 20356905]

約数ペア:

[(1, 20356905), (3, 6785635), (5, 4071381), (15, 1357127), (17, 1197465), (51, 399155), (85, 239493), (97, 209865), (255, 79831), (291, 69955), (485, 41973), (823, 24735), (1455, 13991), (1649, 12345), (2469, 8245), (4115, 4947)]