21995337

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 39223296

約数和(自身を除く): 17227959

約数列:

[1, 3, 7, 13, 21, 23, 31, 39, 69, 91, 93, 113, 161, 217, 273, 299, 339, 403, 483, 651, 713, 791, 897, 1209, 1469, 2093, 2139, 2373, 2599, 2821, 3503, 4407, 4991, 6279, 7797, 8463, 9269, 10283, 10509, 14973, 18193, 24521, 27807, 30849, 33787, 45539, 54579, 64883, 73563, 80569, 101361, 136617, 194649, 236509, 241707, 318773, 563983, 709527, 956319, 1047397, 1691949, 3142191, 7331779, 21995337]

約数ペア:

[(1, 21995337), (3, 7331779), (7, 3142191), (13, 1691949), (21, 1047397), (23, 956319), (31, 709527), (39, 563983), (69, 318773), (91, 241707), (93, 236509), (113, 194649), (161, 136617), (217, 101361), (273, 80569), (299, 73563), (339, 64883), (403, 54579), (483, 45539), (651, 33787), (713, 30849), (791, 27807), (897, 24521), (1209, 18193), (1469, 14973), (2093, 10509), (2139, 10283), (2373, 9269), (2599, 8463), (2821, 7797), (3503, 6279), (4407, 4991)]