21992817

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:131

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 17175183

約数列:

[1, 3, 7, 11, 21, 29, 33, 49, 67, 77, 87, 147, 201, 203, 231, 319, 343, 469, 539, 609, 737, 957, 1029, 1407, 1421, 1617, 1943, 2211, 2233, 3283, 3773, 4263, 5159, 5829, 6699, 9849, 9947, 11319, 13601, 15477, 15631, 21373, 22981, 29841, 36113, 40803, 46893, 64119, 68943, 95207, 108339, 109417, 149611, 252791, 285621, 328251, 448833, 666449, 758373, 1047277, 1999347, 3141831, 7330939, 21992817]

約数ペア:

[(1, 21992817), (3, 7330939), (7, 3141831), (11, 1999347), (21, 1047277), (29, 758373), (33, 666449), (49, 448833), (67, 328251), (77, 285621), (87, 252791), (147, 149611), (201, 109417), (203, 108339), (231, 95207), (319, 68943), (343, 64119), (469, 46893), (539, 40803), (609, 36113), (737, 29841), (957, 22981), (1029, 21373), (1407, 15631), (1421, 15477), (1617, 13601), (1943, 11319), (2211, 9947), (2233, 9849), (3283, 6699), (3773, 5829), (4263, 5159)]