21101020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55529}}^1$

素因数の和:55557

約数の個数: 24

約数和(自身を含む): 46645200

約数和(自身を除く): 25544180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55529, 111058, 222116, 277645, 555290, 1055051, 1110580, 2110102, 4220204, 5275255, 10550510, 21101020]

約数ペア:

[(1, 21101020), (2, 10550510), (4, 5275255), (5, 4220204), (10, 2110102), (19, 1110580), (20, 1055051), (38, 555290), (76, 277645), (95, 222116), (190, 111058), (380, 55529)]