28287765

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:511

約数の個数: 64

約数和(自身を含む): 56263680

約数和(自身を除く): 27975915

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 43, 45, 55, 99, 129, 135, 165, 215, 297, 387, 443, 473, 495, 645, 1161, 1329, 1419, 1485, 1935, 2215, 2365, 3987, 4257, 4873, 5805, 6645, 7095, 11961, 12771, 14619, 19049, 19935, 21285, 24365, 43857, 57147, 59805, 63855, 73095, 95245, 131571, 171441, 209539, 219285, 285735, 514323, 628617, 657855, 857205, 1047695, 1885851, 2571615, 3143085, 5657553, 9429255, 28287765]

約数ペア:

[(1, 28287765), (3, 9429255), (5, 5657553), (9, 3143085), (11, 2571615), (15, 1885851), (27, 1047695), (33, 857205), (43, 657855), (45, 628617), (55, 514323), (99, 285735), (129, 219285), (135, 209539), (165, 171441), (215, 131571), (297, 95245), (387, 73095), (443, 63855), (473, 59805), (495, 57147), (645, 43857), (1161, 24365), (1329, 21285), (1419, 19935), (1485, 19049), (1935, 14619), (2215, 12771), (2365, 11961), (3987, 7095), (4257, 6645), (4873, 5805)]