21684234

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 51609600

約数和(自身を除く): 29925366

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 127, 143, 199, 254, 286, 381, 398, 429, 597, 762, 858, 1194, 1397, 1651, 2189, 2587, 2794, 3302, 4191, 4378, 4953, 5174, 6567, 7761, 8382, 9906, 13134, 15522, 18161, 25273, 28457, 36322, 50546, 54483, 56914, 75819, 85371, 108966, 151638, 170742, 278003, 328549, 556006, 657098, 834009, 985647, 1668018, 1971294, 3614039, 7228078, 10842117, 21684234]

約数ペア:

[(1, 21684234), (2, 10842117), (3, 7228078), (6, 3614039), (11, 1971294), (13, 1668018), (22, 985647), (26, 834009), (33, 657098), (39, 556006), (66, 328549), (78, 278003), (127, 170742), (143, 151638), (199, 108966), (254, 85371), (286, 75819), (381, 56914), (398, 54483), (429, 50546), (597, 36322), (762, 28457), (858, 25273), (1194, 18161), (1397, 15522), (1651, 13134), (2189, 9906), (2587, 8382), (2794, 7761), (3302, 6567), (4191, 5174), (4378, 4953)]