21565665

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2293}}^1$

素因数の和:2334

約数の個数: 48

約数和(自身を含む): 42943680

約数和(自身を除く): 21378015

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2293, 3135, 6879, 9405, 11465, 20637, 25223, 34395, 43567, 75669, 103185, 126115, 130701, 217835, 227007, 378345, 392103, 479237, 653505, 1135035, 1437711, 1960515, 2396185, 4313133, 7188555, 21565665]

約数ペア:

[(1, 21565665), (3, 7188555), (5, 4313133), (9, 2396185), (11, 1960515), (15, 1437711), (19, 1135035), (33, 653505), (45, 479237), (55, 392103), (57, 378345), (95, 227007), (99, 217835), (165, 130701), (171, 126115), (209, 103185), (285, 75669), (495, 43567), (627, 34395), (855, 25223), (1045, 20637), (1881, 11465), (2293, 9405), (3135, 6879)]