28778004

素因数分解:

$2^2\times 3^6\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:232

約数の個数: 84

約数和(自身を含む): 77122080

約数和(自身を除く): 48344076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 81, 108, 139, 142, 162, 213, 243, 278, 284, 324, 417, 426, 486, 556, 639, 729, 834, 852, 972, 1251, 1278, 1458, 1668, 1917, 2502, 2556, 2916, 3753, 3834, 5004, 5751, 7506, 7668, 9869, 11259, 11502, 15012, 17253, 19738, 22518, 23004, 29607, 33777, 34506, 39476, 45036, 51759, 59214, 67554, 69012, 88821, 101331, 103518, 118428, 135108, 177642, 202662, 207036, 266463, 355284, 405324, 532926, 799389, 1065852, 1598778, 2398167, 3197556, 4796334, 7194501, 9592668, 14389002, 28778004]

約数ペア:

[(1, 28778004), (2, 14389002), (3, 9592668), (4, 7194501), (6, 4796334), (9, 3197556), (12, 2398167), (18, 1598778), (27, 1065852), (36, 799389), (54, 532926), (71, 405324), (81, 355284), (108, 266463), (139, 207036), (142, 202662), (162, 177642), (213, 135108), (243, 118428), (278, 103518), (284, 101331), (324, 88821), (417, 69012), (426, 67554), (486, 59214), (556, 51759), (639, 45036), (729, 39476), (834, 34506), (852, 33777), (972, 29607), (1251, 23004), (1278, 22518), (1458, 19738), (1668, 17253), (1917, 15012), (2502, 11502), (2556, 11259), (2916, 9869), (3753, 7668), (3834, 7506), (5004, 5751)]