816441381

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{701}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 1456509600

約数和(自身を除く): 640068219

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 139, 147, 171, 399, 417, 441, 701, 931, 973, 1197, 1251, 2103, 2641, 2793, 2919, 4907, 6309, 6811, 7923, 8379, 8757, 13319, 14721, 18487, 20433, 23769, 34349, 39957, 44163, 55461, 61299, 93233, 97439, 103047, 119871, 129409, 166383, 279699, 292317, 309141, 388227, 652631, 682073, 839097, 876951, 1164681, 1851341, 1957893, 2046219, 4774511, 5554023, 5873679, 6138657, 12959387, 14323533, 16662069, 38878161, 42970599, 90715709, 116634483, 272147127, 816441381]

約数ペア:

[(1, 816441381), (3, 272147127), (7, 116634483), (9, 90715709), (19, 42970599), (21, 38878161), (49, 16662069), (57, 14323533), (63, 12959387), (133, 6138657), (139, 5873679), (147, 5554023), (171, 4774511), (399, 2046219), (417, 1957893), (441, 1851341), (701, 1164681), (931, 876951), (973, 839097), (1197, 682073), (1251, 652631), (2103, 388227), (2641, 309141), (2793, 292317), (2919, 279699), (4907, 166383), (6309, 129409), (6811, 119871), (7923, 103047), (8379, 97439), (8757, 93233), (13319, 61299), (14721, 55461), (18487, 44163), (20433, 39957), (23769, 34349)]