20197473989

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{367889}}^1$

素因数の和:367961

約数の個数: 32

約数和(自身を含む): 27123793920

約数和(自身を除く): 6926319931

約数列:

[1, 7, 11, 23, 31, 77, 161, 217, 253, 341, 713, 1771, 2387, 4991, 7843, 54901, 367889, 2575223, 4046779, 8461447, 11404559, 28327453, 59230129, 79831913, 93075917, 125450149, 262304857, 651531419, 878151043, 1836133999, 2885353427, 20197473989]

約数ペア:

[(1, 20197473989), (7, 2885353427), (11, 1836133999), (23, 878151043), (31, 651531419), (77, 262304857), (161, 125450149), (217, 93075917), (253, 79831913), (341, 59230129), (713, 28327453), (1771, 11404559), (2387, 8461447), (4991, 4046779), (7843, 2575223), (54901, 367889)]