20919855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6673}}^1$

素因数の和:6711

約数の個数: 32

約数和(自身を含む): 38442240

約数和(自身を除く): 17522385

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6673, 20019, 33365, 73403, 100095, 126787, 220209, 367015, 380361, 633935, 1101045, 1394657, 1901805, 4183971, 6973285, 20919855]

約数ペア:

[(1, 20919855), (3, 6973285), (5, 4183971), (11, 1901805), (15, 1394657), (19, 1101045), (33, 633935), (55, 380361), (57, 367015), (95, 220209), (165, 126787), (209, 100095), (285, 73403), (627, 33365), (1045, 20019), (3135, 6673)]