20503945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2803}}^1$

素因数の和:2845

約数の個数: 32

約数和(自身を含む): 32302080

約数和(自身を除く): 11798135

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2803, 7315, 14015, 19621, 30833, 53257, 98105, 154165, 215831, 266285, 372799, 585827, 1079155, 1863995, 2929135, 4100789, 20503945]

約数ペア:

[(1, 20503945), (5, 4100789), (7, 2929135), (11, 1863995), (19, 1079155), (35, 585827), (55, 372799), (77, 266285), (95, 215831), (133, 154165), (209, 98105), (385, 53257), (665, 30833), (1045, 19621), (1463, 14015), (2803, 7315)]