21985740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17449}}^1$

素因数の和:17471

約数の個数: 72

約数和(自身を含む): 76221600

約数和(自身を除く): 54235860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17449, 34898, 52347, 69796, 87245, 104694, 122143, 157041, 174490, 209388, 244286, 261735, 314082, 348980, 366429, 488572, 523470, 610715, 628164, 732858, 785205, 1046940, 1099287, 1221430, 1465716, 1570410, 1832145, 2198574, 2442860, 3140820, 3664290, 4397148, 5496435, 7328580, 10992870, 21985740]

約数ペア:

[(1, 21985740), (2, 10992870), (3, 7328580), (4, 5496435), (5, 4397148), (6, 3664290), (7, 3140820), (9, 2442860), (10, 2198574), (12, 1832145), (14, 1570410), (15, 1465716), (18, 1221430), (20, 1099287), (21, 1046940), (28, 785205), (30, 732858), (35, 628164), (36, 610715), (42, 523470), (45, 488572), (60, 366429), (63, 348980), (70, 314082), (84, 261735), (90, 244286), (105, 209388), (126, 174490), (140, 157041), (180, 122143), (210, 104694), (252, 87245), (315, 69796), (420, 52347), (630, 34898), (1260, 17449)]