20749755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1097}}^1$

素因数の和:1215

約数の個数: 32

約数和(自身を含む): 36154944

約数和(自身を除く): 15405189

約数列:

[1, 3, 5, 13, 15, 39, 65, 97, 195, 291, 485, 1097, 1261, 1455, 3291, 3783, 5485, 6305, 14261, 16455, 18915, 42783, 71305, 106409, 213915, 319227, 532045, 1383317, 1596135, 4149951, 6916585, 20749755]

約数ペア:

[(1, 20749755), (3, 6916585), (5, 4149951), (13, 1596135), (15, 1383317), (39, 532045), (65, 319227), (97, 213915), (195, 106409), (291, 71305), (485, 42783), (1097, 18915), (1261, 16455), (1455, 14261), (3291, 6305), (3783, 5485)]