20577513

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{887}}^1$

素因数の和:957

約数の個数: 32

約数和(自身を含む): 32394240

約数和(自身を除く): 11816727

約数列:

[1, 3, 11, 19, 33, 37, 57, 111, 209, 407, 627, 703, 887, 1221, 2109, 2661, 7733, 9757, 16853, 23199, 29271, 32819, 50559, 98457, 185383, 361009, 556149, 623561, 1083027, 1870683, 6859171, 20577513]

約数ペア:

[(1, 20577513), (3, 6859171), (11, 1870683), (19, 1083027), (33, 623561), (37, 556149), (57, 361009), (111, 185383), (209, 98457), (407, 50559), (627, 32819), (703, 29271), (887, 23199), (1221, 16853), (2109, 9757), (2661, 7733)]