21368787

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{197}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 33073920

約数和(自身を除く): 11705133

約数列:

[1, 3, 11, 19, 33, 57, 173, 197, 209, 519, 591, 627, 1903, 2167, 3287, 3743, 5709, 6501, 9861, 11229, 34081, 36157, 41173, 102243, 108471, 123519, 374891, 647539, 1124673, 1942617, 7122929, 21368787]

約数ペア:

[(1, 21368787), (3, 7122929), (11, 1942617), (19, 1124673), (33, 647539), (57, 374891), (173, 123519), (197, 108471), (209, 102243), (519, 41173), (591, 36157), (627, 34081), (1903, 11229), (2167, 9861), (3287, 6501), (3743, 5709)]